Question

Simplify: 6n(5n² - 7n+5)

A. 30n³+42n² - 30n
B. 30n³ +30n
c. 30n² +42n +30
D. 30n³-42n² + 30n

Answer 1

Answer: D. 30n³-42n² + 30n

Given equation: 6n(5n² - 7n+5)

Use distributive property: a(b + c) = ab + ac

using it: 5n²(6n)- 7n(6n)+5(6n)

evaluate: 5(6)(n²)(n) - 7(6)(n)(n) + 5(6)(n)

simplify: 30n³ - 42n² + 30n

So, hence (D) matches with our answer.