Liusa V.

asked • 10/07/13

6a2+41a+63

What is the answer?

2 Answers By Expert Tutors

By:

Lisa K. answered • 10/07/13

Tutor
New to Wyzant

4.0 graduate... Let me show you how to ACE your classes!

See tutors like this
See tutors like this
6a2+41a+63=0
 
63=7*9
 
(_a+7)(_a+9)
 
6=2*3
 
(3a+7)(2a+9)=0
3a+7=0; 2a+9=0
3a=-7; 2a=-9
a= -7/3; a= -9/2
 
CHECK:
FOIL
F: 3a*2a = 6a2
0: 3a*9 = 27a
I: 7*2a = 14a
L: 7*9 = 63
= 6a2+27a+14a+63
= 6a2+41a+63
 
REPLACE:
6(-7/3)2+41(-7/3)+63 = 0
6(-9/2)2+41(-9/2)+63 = 0
 
Upvote • 1 Downvote
More
Report

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.