Problem

$-13$ In the rational algebraic expression $\dfrac {x^{2}-1} {1-2x+x^{2}}$ what factor is common to both numerator and denominator?
$A.x+1$ B. $x-1$ $C.x^{2-1}$ D. $x^{2}+1$
14. Which of the following is the simplest form of $\dfrac {x^{2}+2x+1} {x^{2}-1}7$
A. Xx-+1 1 B. xx+-1 1 C. x1-+x 1 D. $\dfrac {1-x} {x+1}$
15. Which of the following rational expression has $\dfrac {x+1} {2}$ as simplest form?
$x^{2}-1$ $-$ C. $\dfrac {x^{2}+2x+1} {2x+2}$ D. $\dfrac {\left(x+1\right)\left(x+2\right)} {2x+2}$
$A.\dfrac {2x+1} {4}$ B. $2x+2$
5. Which of the following is the simplest form of $\dfrac {x^{2}-1} {x^{3}-1}7$
$\dfrac {1} {x-1}$ X-1
$C.\dfrac {x+1} {x^{2}+x+1}$ D. $\dfrac {x+1} {x^{2}-x+1}$

7th-9th grade

Algebra

Search count: 118

Solution

Qanda teacher - anudeepk

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rational expression what factor is common to both numerator $2n6$
4. denominator? $0$ $1$
$nmocoso$ $coom$ $s0$ $A$ $x+$ $B$
$3$ $c$ $x^{2-1}$

7th-9th grade

Geometry

Search count: 135