46.1k views
1 vote
I need help really bad on these questions. they are do tomorrow

I need help really bad on these questions. they are do tomorrow-example-1
User Msk
by
7.8k points

1 Answer

6 votes
11)
Find two numbers that multiply together to equal 9 * 10 = 90, and add together to equal 21.

9 and 10 do not add to 21.
15*6 = 90
15 + 6 = 21

Since 15 and 6 make both true, then split 21x into 15x and 6x.

9x² + 6x + 15x + 10

Factor a 3x out of the first two terms and factor a 5 out of the last two terms.

3x(3x + 2) + 5(3x+2)

Factor our (3x+2) out of both, leaving you with (3x+5)

9x²+21x+10 = (3x+5)(3x+2)


User Nevus
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories