Question

Упростить выражения:
3а^2в*(-5а^3в)
(а+6)^2-2а(3-2а)
(2x^2y)^3
(y-4)(y+2)-(y-2)(y+2)

Answer 1

$3a ^{2} b*(-5a^{3}b) \\-15a^{5}b^{2} \\---------------------- \\(a+6)^{2} -2a*(3-2a) \\a^{2} +12a+36-6a+4a^{2} \\5a^{2} +6a+36 \\-------------------- \\(2x^{2} y)^{3} \\2^{3}*(x^{2} )^{3}*y^{3} \\8x^{6}y^{3} \\----------------------- \\(y-4)*(y+2)-(y-2)*(y+2) \\(y+2)*(y-4-(y-2)) \\(y+2)*(y-4-y+2) \\(y+2)*(-2) \\-2(y+2)$