Приведіть многочлен до стандартного вигляду:
1) -3(2x^2-7x-3)+2(5x-1)
2)  4(-2a^2+5a)-3(4a^2-2a-7)
3) 2x(3x^2-2x-5)-3x^2(2x-3)
4) -3y^3(2y^2-5y-1)+(3y-4)*2y^4
5) -4a(a^4-3a^2+2a-1)-0,5a^2(2a^2-6a-8)
6) (0,4b^2-0,5b+2)(-10b^2)+5b^2(4b^2-3b-2)
7) (-8x^2+4x-3)(-0,5x)-6x^2(1,5x^2-2x+3)
8) -2x(5y^2-y)-y^2(2y-5)+3(-2y^3+y^2-3)
9) (5a^2-3a-1)*2a^3-3a^3(2a^2-3a)+4(-a^5+2a)
плиз

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