Question

a)(2x + 3) . (5x – 4) = b)2x + 3 = x + 5 c)3x – 3 = x +5

Answer 1

Resposta:

Explicação passo a passo:

(2x+3).(5x-4)=

10x²-8x+15x-12=

10x²+7x-12

2x+3=x+5=

2x-x=5-3

x=2

3x-3=x+5

3x-x=5+3

2x=8

x=8/2

x=4