Question

show that 2(x3-x)+3x(x-1)=x(x+1)(2x+1)​

Answer 1

2(x³-x)+3x(x-1)=x(x+1)(2x+1)

2x³-2x+3x²-3x=x(2x²+x+2x+1)

2x³+3x²-2x-3x=2x³+x²+2x²+x

2x³+3x²-5x=2x³+3x²+x

2x³-2x³+3x²-3x²-5x-x=0

-5x-x=0

-6x=0

x=0