A) 5у^2y−4y-4y−4 + 4−y4-y4−y^2 = 5y^3 - 20y^2 + 4−y4-y4−y4−y4-y4−y = 5y^3 - 20y^2 + 16−8y+y216 - 8y + y^216−8y+y2 = 5y^3 - 20y^2 + 16 - 8y + y^2 = 5y^3 - 19y^2 - 8y + 16
B) 125a^3 + 150a^2b + 90ab^2 + 27b^3 = 55a3+6a2b+6ab2+3b35a^3 + 6a^2b + 6ab^2 + 3b^35a3+6a2b+6ab2+3b3 = 55a+3b5a + 3b5a+3ba2+2ab+3b2a^2 + 2ab + 3b^2a2+2ab+3b2
A) 5у^2y−4y-4y−4 + 4−y4-y4−y^2 = 5y^3 - 20y^2 + 4−y4-y4−y4−y4-y4−y = 5y^3 - 20y^2 + 16−8y+y216 - 8y + y^216−8y+y2 = 5y^3 - 20y^2 + 16 - 8y + y^2 = 5y^3 - 19y^2 - 8y + 16
B) 125a^3 + 150a^2b + 90ab^2 + 27b^3 = 55a3+6a2b+6ab2+3b35a^3 + 6a^2b + 6ab^2 + 3b^35a3+6a2b+6ab2+3b3 = 55a+3b5a + 3b5a+3ba2+2ab+3b2a^2 + 2ab + 3b^2a2+2ab+3b2