Question

Produtos Notaveis
1-Calcule.
a) (x+3)(x-3)=? b)(x-5)(x+5)=?
c)(a-1)(a+1)=?
d)(t+6)(t-6)=? e)(9x-1)(9x+1)=? f)(7a-2b)(7a+2b)=?
preciso das resposta urgenteeee por favor

Answer 1

Bom dia

a) (x + 3)(x - 3) = x² - 9

b) (x - 5)(x + 5) = x² - 25

c) (a - 1)(a + 1) = a² - 1

d) (t + 6)(t - 6) = t² - 36

e) (9x - 1)(9x + 1) = 81x - 1

f)  (7a - 2b)(7a + 2b) = 49a² - 4b²