 # Intermediate Algebra: Extra Credit , algebra homework help

User Generated

xuhag87

Mathematics

## Description

MUST GIVE STEP BY STEP ANSWER. SHOW ALL WORK!! DETAILED WORK IS BEST!!

### Unformatted Attachment Preview

\)ttYu ( 2x tttt\\f \nhrw\$\uh/ k\qr\o t 3\t/, = ll--1 [Ur \u -L\o q' r\Hu\ = c 7- l- t^\ttrnnq truthunl trr tT tqurufrun UNIk hrr udlwtr und Shlltr( St\trt, X Iht frt bl tI - \D* n Lll, 1115
Purchase answer to see full attachment User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service. The solutions are ready. Please ask if something is unclear or if your need more details.There are two uncertainties in the conditions, I marked them with yellow. Answer to these questions and I'll re-solve if needed. docx and pdf files are identical

3

3

1. (2𝑥 + 3)2 = 27. Note that 2𝑥 + 3 must be non-negative, i.e. 𝑥 ≥ − 2. Now we can
raise both sides to the power
((2𝑥 +

2
3 3
3)2 )

2
3

and obtain an equivalent equation:
2

2

= 2𝑥 + 3 = 273 = (33 )3 = 32 = 9, 2𝑥 = 9 − 3 = 6, 𝑥 =

6
= 𝟑.
2

3

This 𝒙 = 𝟑 ≥ − 2 and thus is the only solution. Or you need complex solutions, too?

2. 𝑦 4 − 40𝑦 2 + 144 = 0. Denote 𝑥 = 𝑦 2 , then 𝑥 2 − 40𝑥 + 144 = 0.
Use the quadratic formula for an even 𝑏:
𝑥 = 20 ± √202 − 144 = 20 ± √256 = 20 ± 16 = 4; 36.
Now solve 𝑦 2 = 4 or 𝑦 2 = 36 and obtain four roots: −𝟐, 𝟐, −𝟔, 𝟔.

3. (8𝑛 − 3)(7𝑛2 + 5�... ### Review Anonymous
I was having a hard time with this subject, and this was a great help. Studypool 4.7 Trustpilot 4.5 Sitejabber 4.4