Question

Упростите выражение: (2x +y) (2z + y) + (x-y) (y – z). 10(2a4 – 3b4) – (4a2 – 5b2) (5a2+ 6b2). (ax +0,5by)(by +0,5ax) – (ax – 0,5by)(bx – 0,5ax).

Answer 1

(2х+у)(2z+y)+(x-y)(y-z)= 2x2z+2xy+2zy+y^2+xy-y^2-xz+yz=xz+3xy+3zy