Question

FATORE AS EXPRESSOES: SOCORRO
a) a² - b²/16
b) 9a² -25b²
c)1/9t² - 64

Answer 1

a)

$\dfrac{a^2 - b^2}{16} \\ \\ \\ \dfrac{(a - b)(a + b)}{2^4}$

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b)

$9a^2 - 25b^2 \\ \\ (3a - 5b)(3a + 5b)$

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c)

$\dfrac{1}{9}t^2 - 64 \\ \\ \\ \dfrac{t^2}{9} - 64 \\ \\ \\ \dfrac{t^2 - 576}{9} \\ \\ \\ => \dfrac{(t - 24)(t + 24)}{9}$