Question

Me ajudem nessas contas
1- (x+8).(x-8)
2-. (X ao quadrado+x).(x ao quadrado-x)

Answer 1

$1-(x+8).(x-8) \\ 1-(x^2-64) \\ 1-x^2+64 \\ 65-x^2$

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$2-(x^2+x).(x^2-x) \\ 2-(x^4-x^2) \\ 2-x^4+x^2 \\ -x^4+x^2+2$

Answer 2

1 ) (x + 8) • (x + 8)
x² + 8x + 8x + 64
x² + 16x + 64


2 ) (x² + x) • (x² - x)
x⁴ - x³ + x³ - x²
x⁴ - x²