Question

Раскройте скобки
1)(х+2)^2-(1+6х)(6х-1)
2)(-2/3х^4-0,4х)^2
3)m^3-27
4)(0,3х+1)(0,09х^2+1-0,3х)

Answer 1

1) x²+4x+4-36x²+1= -35x²+4x+5

2) 4/9 x⁸+8/15 x⁵ +4/25 x²

3) (m-3)(m²+3m+9)

4) 0,027x³+1