Question

(x- 4) ao quadrado ?​

Answer 1

Resposta:

(x-4)²=0

(x-4)(x-4)=0

x²-4x-4x+16=0

x²-8x+16=0

aplica bhaskara

Delta=b²-4ac

Δ = b2 - 4.a.c

Δ = -82 - 4 . 1 . 16

Δ = 64 - 4. 1 . 16

Δ = 0

x=-b+ -Raiz de delta/2a

-(-8)+- √0/2

8+0/2=4

x¹=4

x²=4

Answer 2

(x - 4) ² = x² - 8

espero ter ajudado