Question

Resolva as equações do 2° grau

Answer 1

Resposta:

a )- 5x. b)1x c)8x d)-5x e)2x f) x-8/3

Explicação passo-a-passo:

a) x²-7x=0 b)3x²-5x =0

2x-7x=0 6x-5x=0

-5x=0 1x=0

c) x²-16=0

2x=+16-0

2x=+16

x=+16/2

x=8

d)2x²+20=0

4x=-20

x=-20/4

x=-5

e) x²+2x-8=0

2x+2x=+8-0

4x=+8

x=+8/4

x=2

f) x²-5x+8=0

2x-5x=-8

3x=-8

x=-8/3