Пожалуйста Алгебру помогите срочно

2x^3+7(x^2-x+1)(x+1) при x= -0,25

y^3-(y-3)(y^2+3y+9) при y= -1,75

По формулам:
a^3+b^3=(a+b)(a^2-ab+b^2)
a^3-b^3=(a-b)(a^2+ab+b^2)
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