Question

raizea da equação 6(1-x) + (x+5). (x-2)=3.(4-x)

Answer 1

6(1-x) + (x+5) . (x-2) = 3(4-x)
6-6x + x²-2x+5x-10 = 12-3x
-6x+x²-2x+5x+3x=12+10-6
x²=16
x=raiz de 16
x=4