Упростить:(х+6у)²-(6у+5х)(6у-5х)+х(12-6х).

Question

Упростить:(х+6у)²-(6у+5х)(6у-5х)+х(12-6х).

Answer 1

X^2+12xy+y^2-36y^2-30yx+30xy-25x^2+12x-6x^2 = -30x^2+12xy-35y^2+12x
вот так?

Comments

спс)

Answer 2

X²+12xy+36y²-36y²+30xy-30xy+25x²+12x-6x²=
=12xy+12x= 
=20x²+12xy+12x=
=2x(10x+6y+6)