Question

SOCORRO
Calcule:
a) 5x2 – 20 = 0
b) 3x2 - 48 = 0
c) 2x2 = 8x
d) -2x2 + 10 x =

Answer 1

Resposta:

a) x= 2

b) x= 8

c) x= 1/2

d) -2 (2-5x)

Explicação passo-a-passo:

a) 10x - 20= 0

10x = 20

x= 2

b) 6x-48=0

6x=48

x=8

c) 2²= 8x

4= 8x

8x =4

x= 1/2

d) -4 +10 x

- 2 (2 - 5x)