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Intermediate Algebra

OPENSTAX

$Math Studyset Vaia Explanations$ Math

OER 2017 Edition · 1346 pages

ISBN: 9780998625720

Chapter 1: Q. 1.110 (page 78)

Simplify: $7 x - 5 (x + 4)$

Short Answer

Expert verified

The solution is $2 x - 20$

Step by step solution

01

Step 1. Given information

The expression: $7 x - 5 (x + 4)$

02

Step 2. Calculation

We have,

$7 x - 5 (x + 4) = 7 x - 5 . x + (- 5) . 4 = 7 x - 5 x - 20 = 2 x - 20$

Therefore, the solution is $2 x - 20$

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Most popular questions from this chapter

Translate the English phrase into an algebraic expression:
(a) Four times the sum of p and q.
(b) The sum of four times p and q.

Simplify $\frac{8 (9 - 2) - 4 (14 - 9)}{7 (8 - 3) - 3 (16 - 9)}$

For the following exercises, evaluate each expression.

${(y + z)}^{2}$ when localid="1644418403317" $y = - 4, z = 7$

Evaluate when x=3 (a)x² (b)4^x (c)3x²+4x+1

Simplify: 3x² + 7x + 9 + 7x² + 9x + 8.

See all solutions

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