Chapter A.5, Problem 18E

### Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Chapter
Section

### Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

# In Exercises 11 to 18, determine the values of a, b, and c that are needed in order to use the Quadratic Formula. Choose a > 0 ( 3 x + 2 ) ( 5 x − 4 ) = 48

To determine

To find:

To determine the values of a, b, and c that are needed in order to use the Quadratic Formula

Explanation

Consider the following equation,

(3x+2)(5xâˆ’4)=48.

First multiply the terms inside the bracket to get the following,

(3x+2)(5xâˆ’4)=4815x2âˆ’12x+10xâˆ’8=4815x2âˆ’2xâˆ’8=48

Subtract 48 on both sides to get the following,

15x2âˆ’2xâˆ’8âˆ’48=48âˆ’4815x2âˆ’2xâˆ’56=<

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