Question

Упростите выражение (36b^2 - 25)(1/6b-5 - 1/6b +b) - b +7

Answer 1

$bigg(36b^{2} - 25 bigg) bigg(dfrac{1}{6}b - 5 - dfrac{1}{6}b + b bigg) - b + 7 = \= (36b^{2} - 25)(b - 5) - b + 7 = 36b^{3} - 180b^{2} - 25b + 125 - b + 7 = \= 36b^{3} - 180b^{2} - 26b + 132$