Question

resolva as equações :
a)x^2-3x=2x

b)3x^2+5=5+2x

c)2x^2-7=7 (x-1)

d)(x-5) (x-6)=30​

Answer 1

Explicação passo-a-passo:

a)x^2-3x=2x

x^2 - 5x = 0

x*(x - 5) = 0

x1 = 0, x2 = 5

b)3x^2+5=5+2x

3x^2 - 2x = 0

x*(3x - 2) = 0

x1 = 0, x2 = 2/3

c)2x^2-7=7 (x-1)

2x^2 - 7 = 7x - 7

2x^2 - 7x = 0

x * (2x - 7) = 0

x1 = 0, x2 = 7/2

d)(x-5) (x-6)=30​

x^2 - 11x + 30 = 30

x * (x - 11) = 0

x1 = 0, x2 = 11