Question

Помогите контрол. до 23:59​

Answer 1

1) $3x(x^{3} -4x+6) = 3x^{4} -12x^{2} -18x$

2) $(3x-2y)^{2} = 9x^{2} -12xy+4y^{2}$

3) $(2b+3a)(3a-2b)= (3a)^{2} - (2b)^{2} = 9a^{2} - 4a^{2}$