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Formula
Factorize the expression
Answer
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$x ^{ 2 } -y ^{ 2 } =$
$\left ( x - y \right ) \left ( x + y \right )$
Arrange the expression in the form of factorization..
$\color{#FF6800}{ x } ^ { \color{#FF6800}{ 2 } } \color{#FF6800}{ - } \color{#FF6800}{ y } ^ { \color{#FF6800}{ 2 } }$
$ $ Factorize to use the polynomial formula of sum and difference $ $
$\left ( \color{#FF6800}{ x } \color{#FF6800}{ + } \color{#FF6800}{ y } \right ) \left ( \color{#FF6800}{ x } \color{#FF6800}{ - } \color{#FF6800}{ y } \right )$
$\left ( \color{#FF6800}{ x } \color{#FF6800}{ + } \color{#FF6800}{ y } \right ) \left ( \color{#FF6800}{ x } \color{#FF6800}{ - } \color{#FF6800}{ y } \right )$
$ $ Sort the factors $ $
$\left ( \color{#FF6800}{ x } \color{#FF6800}{ - } \color{#FF6800}{ y } \right ) \left ( \color{#FF6800}{ x } \color{#FF6800}{ + } \color{#FF6800}{ y } \right )$
Solution search results
search-thumbnail-If $x=a$ sec $θ$ and $y=a$ tan $θ$ $thenx^{2}-y^{2}=$ $x^{2}-y^{2}=$ . $..$ 
$A\right)$ $1$ $B\right)a$ $C\right)a^{2}$ D) $910$
10th-13th grade
Trigonometry
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