Odpowiedź :
w(x)=( 8x² + 4x - 14 )(x-1)-5=
=8x³-8x²+4x²-4x-14x+14-5=
=8x³-4x²-18x+9=
=4x²(2x-1)-9(2x-1)=
=(2x-1)(2x-3)(2x+3)
pierwiastki to x=1/2, x=3/2, x=-3/2
=8x³-8x²+4x²-4x-14x+14-5=
=8x³-4x²-18x+9=
=4x²(2x-1)-9(2x-1)=
=(2x-1)(2x-3)(2x+3)
pierwiastki to x=1/2, x=3/2, x=-3/2
w(x)=( 8x² + 4x - 14 )(x-1)-5=8x³-8x²+4x²-4x-14x+14-5=
=8x³-4x²-18x+9=4x²(2x-1)-9(2x-1)=(2x-1)(2x-3)(2x+3)
x=1/2, x=3/2, x=-3/2
=8x³-4x²-18x+9=4x²(2x-1)-9(2x-1)=(2x-1)(2x-3)(2x+3)
x=1/2, x=3/2, x=-3/2