Question

Y = x2 -9x+8 qual a resposta por favor

Answer 1

Resposta:

Explicação passo-a-passo:

Y=x15

Answer 2

Resposta:

$y = x^{2} -9x+8$

Delta = D

$0=x^{2} -9x + 8\\\\D = -9^{2}-4*1*8 \\D = \sqrt{49}$

$\frac{-(-9)\sqrt{49}  }{2*1} =$

$1x=\frac{9+7}{2} \\\\1x=8$

$2x=\frac{9-7}{2} \\\\2x=1$

$y=1^{2} -9+8\\y=0\\ou\\y=8^{2} -9*8+8\\y=0$