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Elementary Algebra

Lynn Marecek, MaryAnne Anthony-Smith

$Math Studyset 91影视 Explanations$ Math

2nd Edition 路 1240 pages

ISBN: 9780998625713

Chapter 6: Q 6.61. (page 715)

Multiply: $- 3 y (5 y^{2} + 8 y - 7)$

Short Answer

Expert verified

$- 15 y^{3} - 24 y^{2} + 21 y$

Step by step solution

01

Step 1. Given information.

The given expression is:

$- 3 y (5 y^{2} + 8 y - 7)$

We have to multiply the given expression.

02

Step 2. Use the distributive property to multiply.

$- 3 y (5 y^{2} + 8 y - 7)$

Now distribute,

$= (- 3 y) 路 5 y^{2} + (- 3 y) 路 8 y - (- 3 y) 路 7$

Simplify,

$= - 15 y^{3} - 24 y^{2} + 21 y$

Therefore, the value of the given expression is $- 15 y^{3} - 24 y^{2} + 21 y$ .

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