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20 votes
9)

What is the complete factorization of x2 + 4x-45?
OA (x + 15)(x-3)
OB. (x- 9)(x + 5)
OC. (x + 9)(x - 5)
OD. (x - 15)(x+3)​

2 Answers

7 votes

Answer:

C

Explanation:

x^2+4x-45

(x+9)(x-5)

since 4x is positive, the larger factor of 45 needs to be positive

that's why the 5 is negative

when solving problems like this, just find two factors of the last number that add up to the middle number

then throw them in parenthesis with an x

User Joshtkling
by
8.2k points
4 votes

Hi,

x2 + 4x − 45 can be factorized to (x + 9)(x - 5).

the correct answer is C (x + 9)(x - 5).

I added a screenshot...

XD


9) What is the complete factorization of x2 + 4x-45? OA (x + 15)(x-3) OB. (x- 9)(x-example-1
User CharlesDeeZee
by
8.3k points

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