Question

resolvam as equações abaixo,me ajudem por favorrr​

Answer 1

Explicação passo-a-passo:

A)

23x–16=14–17x

23x+17x=14+16

40x=30

X=40/30

X=3/4

B)

10y–5(1+y)=3(2y–2)–20

10y–5–5y=6y–6–20

5y–5=6y–26

5y–6y=–26+5

–y= –21

Y=21

C)

X(x+4)+x(x+2)=2x2+12

X²+4x+x²+2x=4x+12

X²+x²+2x=12

2x²+2x=12

X²+x=6

X²+x-6=0

X²+3x-2x-6=0

X(x+3)-2(x+3)=0

(x+3)(x-2)=0

X+3=0

X-2=0

X1= –3

X2=2