Question

Упростите выражение:
1) 4х^4*(-2х^2)^3
2) (3х-1)(3х+1)+(3х+1)^2
3) 5х^2*(-3х^3)^2
4) (2х-1)^2+(2х-1)(2x+1)

Answer 1

$4x^4*(-2x^2)^3=-4x^4*2x^6=-8x^{10}\ (3x+1)(3x-1+3x+1)=(3x+1)*6x=18x^2+6x\ 5x^2(-3x^3)^2=-5x^2*3x^6=-15x^8\ (2x-1)(2x-1+2x+1)=(2x-1)*4x=8x^2-4x$