Question

Разложите на множители многочлен

Answer 1

1)-8(x^4-y^4)=-8(x²-y²)(x²+y²)=-8(x-y)(x+y)(x²+y²)
2)16(m-n)(m+n)(m²+n²)
3)3(25a²+20ab+4b²)=3(5a+2b)²
4)-7(-12x²y²+9x^4+4y^4)=-7(3x²-2y²)²