Question

ПОМОГИТЕ СРОЧНО!!!!!!!!
1) 15x^2-(3x-7)(5x+2)
2) y^2(2y+5)(y^2-y)
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Answer 1

Объяснение:

1)

$15x {}^{2} - (3x - 7)(5x + 2) = 15x {}^{2} - (15x {}^{2} - 29x - 14) = 15x {}^{2} - 15x {}^{2} + 29x + 14 = 29x + 14$

2)

$y {}^{2} (2y + 5)(y {}^{2} - y) = (2y {}^{3} + 5y {}^{2} )(y {}^{2} - y) = 2y {}^{5} + 3y {}^{4} - 5y {}^{3}$