Question

08. Resolva os exercicios a seguir usando Bhaskara
a) x² - 4x - 12 = 0
b) x²+ 6x + 9 = 0
c) 3x²+ 4x + 2 = 0
d) 6²- x- 5=0
e) x²- 6x - 16 = 0​

Answer 1

Resposta:

a) x1= -2, x2= 6

b) x= -3

c) x e R

d) x= 31

e) x= -2, x=8

Explicação passo-a-passo:

a) x²+2x-6x-12=0

x*(x+2)-6(x+2)=0

(x+2)*(x-6)=0

x+2=0

x-6=0

x1= -2, x2= 6

b) x² + 2*x*3+3²

(x+3)²

x+3=0

x= -3

c) $x= \frac{-4 +- \sqrt{x} 4²-4*3*2}{2*3}$

x= -4 +- $\sqrt{-8}$/6

x e R

d) 36 - x -5=0

31 -x =0

- x= -31

x= 31

e) x²+2x-8x-16=0

x*(x+2)-8(x+2)=0

(x+2)*(x-8)= 0

x+2= 0

x-8= 0

x= -2, x=8