인기 질문답변
QANDA의 1억 명 이상의 친구들이 자주 묻는 질문과 답변을 확인하고 함께 공부해보세요!
4-2 다음 식을 간단히 하시오.
(1) \( (8ab^2 - 4ab) \div (ab)^2 \times 3a^2b \)
(2) \( (x^3y + 2x^2y) \div xy - (3x^3 - 15x^2) \div (-3x) \)
(3) \( \left( 8x - \frac{1}{3}y \right) \times \frac{3}{□}x - \left( □□□□□ \right) \)
Step1. 문제 (1) 분자와 분모를 인수분해하고 단순화
분자 (8ab
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5 다음 좌표평면 위의 점의 좌표를 기호로 나타내시오.
(1) 원점 O
(2) x축 위에 있고, x좌표가 -4인 점 P
(3) y축 위에 있고, y좌표가 5□□□
(1) O: \( (0,0) \)
(2) P: \( (-4,0) \)
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1111
두 개의 주사위 A, B를 던져서 나온 눈의 수를 각각 \(a\), \(b\)
라 할 때, 두 눈의 수의 합이 5가 되는 순서쌍 \((a, b\)□□□□).
눈 a, b가 가질 수 있는 값을 살펴보면, 다음과 같이 합이 5를 만족하는 경우는
\( a+b = 5 \)
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have the same meaning:
Sentences
다음 두 문장이 같은 의미가 되도록 빈칸에 알맞은 말을
쓰시오.
1. She has two sons, who are teachers. 1)
→ She has two sons, □□□□□ are
teachers.
2. I met the boy, but he said nothing.2)
→ I met the boy, □□□□□ said nothing.
3. I have two cats, and they are very cute.3)
→ I have two cats, □□□□□ are very cute.
4. I met one of my old friends, who recognized
me at once.4)
→ I met one of my old friends, □□□□□
recognized me at once.
5. Tom bought a toy car, but he lost it the next day.5)
→ Tom bought a toy car, □□□□□ he lost the
next day.
6. She remained silent, and it seemed to irritate him.6)
→ She remained silent, □□□□□ seemed to
irritate him.
7. I don't like the woman, for she has a big
mouth.7)
→ I don't like the woman, □□□□□ has a big
mouth.
8. Mary finished her homework, which made her
very tired.8)
→ Mary finished her homework, □□□□□ made her very tired.
9. He said he saw me there, which was a lie.9)
→ He said he sa□□□□□, □□□□□.
system.
□□□□□ rooms, □□□□□.
Step1. 선행사 식별
문장 앞부
영어
0653
오른쪽 그림의 반원 O에서
$\overline{AC}$=$\overline{OC}$, ∠BOD=70°,
$\overline{AC}$=12cm일 때, 다음을 구
하시오.
(1) ∠CO□□□□□
□□□□□
Step1. ∠COD 구하기
세 점 A, O, C가 이루는 삼각형
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Part 2
☐Fill in the blanks using as ... as
as ... as를 사용하여 빈칸을 채우시오.
e.g.
The blue car is slower than the red car.
→ The blue car isn't as fast as the red car.
1. Jack's English is worse than Sonia's.
→ Jack's English isn't ☐☐☐☐☐☐☐ Sonia's.
2. Alper's bag is 3 kg. Ahmet's bag is 5 kg.
→ Alper's bag isn't as ☐☐☐☐☐ as Ahmet's
bag.
3. An orange is sweeter than a lemon.
→ A lemon isn't as ☐☐☐☐☐☐☐ as an orange.
4. Terry is 1.70 cm tall. Jason is 1.70 cm tall too.
→ Terry is as ☐☐☐☐☐ as Jason.
5. The violin is higher than the cello.
→ The violin isn't ☐☐☐☐☐☐☐ the cello.
6. Chemistry is more difficult than drawing.
→ Chemistry isn't ☐☐☐☐☐☐☐☐ drawing.
7. Chinese is more difficult than French.
→ French isn't ☐☐☐☐☐☐☐☐☐ Chinese.
8. Yuna is better at English than Susie.
Susie's English isn't ☐☐☐☐☐☐ Yuna's
English.
9. July is hotter than May.
→ May isn't as ☐☐☐☐☐☐ as July.
10. Gold is heavier than Silv.
→ ☐☐☐☐ ☐☐☐☐☐☐☐☐☐☐☐☐☐ s ☐☐☐☐☐☐☐☐☐☐☐☐☐ as ☐☐☐☐☐☐☐.
다음과 같이 as ~ as 구문을 완성할 수 있습니다:
1) Jack’s English isn’t as good as Sonia’s.
2) Alper’s bag isn’t as heavy as Ahmet’s bag.
3) A lemon isn’t as sweet as an orange.
4) Terry is as tall as Jason.
5) The violin isn’t as low as the cello.
6) Chemistry isn’t as easy as drawing.
7) Fr
영어
8-3 🤔🤔🤔
\(x^2 - 2xy + 4x + y^2 - 4y - 12\)를 인수분해 □□□.
Step1. 완전제곱식 부분 묶기
x² - 2x
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13
연립부등식 \( \begin{cases} x^2 - 5x \le 0 \\ x^2 + 3x - 1 \ge 2x + 5 \end{cases} \) 의 해와 이차부등식
\( ax^2 - 7x + b \le 0 \) 의 해가 서로 같을 때, 상수 \( a \), \( b \) 에 대하여
\( a + b \) 의 값은?
① □□□□□
Step1. 연립부등식의 해 구하기
먼저 각 부등식
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0694 대표문제
\(0 \le x < \pi\)일 때, 방정식 \(2 \sin\left(2x + \frac{\pi}{3}\right) = 1\)의 모든 근의 합은 □□□□□이다.
Step1. 삼각방정식을 일반해로 변형하기
2 sin(2x + π/3
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0334
실수 전체의 집합에서 미분가능한 함수 \(f(x)\)가
\(f(x) = ax^3 + bx^2 + x + 1\) \((-1 \le x < 1)\)
이고 \(f(x+2) = f(x)\)를 만족시킬 때, \(f(101) + f(\square \square)\)□
Step1. 경계조건 설정
f(x+2)=f(x)에서 x=1과 x=-1을
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0684 □
연립방정식 \(\begin{cases} (a-1)x+y=3 \\ 4x+2y=a+b \end{cases}\) 의 해가 없을 때, 상수 \(a\), \(b\)
의 □
Step1. 두 직선의 계수비 비교
x, y의 계수를 비교하여 평행 조건 (해가 없거나 무
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