Question

x²+3x-6=-8 ajudaa prfvvv

Answer 1

Resposta:

x1= -2

x2= -1

Explicação passo-a-passo:

x²+3x-6=-8

x²+3x-6+8=0

x(x+2)+x+2=0

(x+2)+(x+1)=0

x+2=0

x+1=0

x1= -2

x2= -1

Answer 2

x² + 3x - 6 = - 8

x² + 3x - 6 + 8 = 0

x² + 3x + 2 = 0

A= 1

B= 3

C= 2

∆= b² - 4ac

∆= 3² - 4 • 1 • 2

∆= 9 - 8

∆= 1

x= - b ± √∆ /2a

x= - 3 ± √1 / 2 • 1

x'= - 3 + 1/2 = - 2/2 = - 1

x''= - 3 - 1/2 = - 4/2 = - 2

S= ( - 2 , - 1)