Question

B= x²-4x+4=7x+12C= x²-4x+2x-8=x+2D= 2x²-16x=-x2+15xe= 4x²+100=2x²+492F= 10x²-5x=2x²+4xG=2x²-3x5+2x²-8x=x2=6+12xH= 21x+4x²+12+3x²22x-17I= 3x-5+4x-8-x²=2x²-7+32x.

Answer 1

Resposta:

B) x²-4x+4=7x+12

x²-4x-7x=12-4

x²-11x=6

x=$\frac{6}{10}$

x=$\frac{3}{5}$

C= x²-4x+2x-8=x+2

x²-4x+2x-x=2+8

x²-3x=10

-2x=10

x=-$\frac{10}{2}$

x= -5

E) 4x²+100=2x²+492

4x²-2x²=492-100

2x²=392

x²=$\frac{392}2}$

x²=192

√192

I) 3x-5+4x-8-x²=2x²-7+32x

3x-x²-2x²-32x=8+5

-3x²-29x=13

Explicação passo a passo: