Question

resolva as equações do 2 grau

Answer 1

A) 3x²-3=24

3x²=24+3

3x²=27

x²=27/3

x²=9

x= +-3

B)2x²-2= x²+7

2x²-x²=7+2

x²=9

x= +- 3

C)5x²-5=4x²+4

x²=9

x=+-3

D)x²+4x-3x-12+8=x

x²+4x-3x-12+8-x=0

x²=12-8

x²=4

x=+-2