Question

(3x-5) (3x+5)= urgente

Answer 1

(a -b) (a +b) = ( a)² - ( b)²

(3x-5) (3x+5) = (3x)² - (5)² = 9x² - 25

Answer 2

Explicação passo-a-passo:

(3×(-5))×(3×5)

(-15)×(3×5)

(-15)×15

-225