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Exercise

$\frac{4-x^2}{2-x}$

Step-by-step Solution

1

Factor the difference of squares $4-x^2$ as the product of two conjugated binomials

$\frac{\left(2+x\right)\left(2-x\right)}{2-x}$
2

Simplify the fraction $\frac{\left(2+x\right)\left(2-x\right)}{2-x}$ by $2-x$

$2+x$

Final answer to the exercise

$2+x$

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Main Topic: Factor by Difference of Squares

The difference of two squares is a squared number subtracted from another squared number. Every difference of squares may be factored according to the identity a^2-b^2=(a+b)(a-b) in elementary algebra.

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