Question

Conta com resposta 7(2x-3)2x(x+1)-5(x-9)=3x-1

Answer 1

7(2x-3)2x(x+1)-5(x-9)=3x-1
14x(2x-3)(x+1)-5(x-9)
14x(2x²-x-3)
14x-2x²+13x(-x)+14x(-3)
14x-2x²-14x²-42x
28x³-14x²-42x-5(x-9)
a=-5,b-x,c=-9
-5x+5*9
-5x+45
28x³-14x²-47x+45+1=3x-1+1
28x³-14x²-50x+46=0
xaprox=-1,47176 .