Question

2m²+27m+70
a.(2m+7)(m+10)
b.(2m+10)(m+7)
c.(2m+3)(m+20)
d.(2m+7)(2m-10)

Answer 1

How do you factor this?

Answer 2

2m²+27m+70

What are two numbers that multiply to 2*70 and also add to 27 ?

Answer 3

i dont think any of the answers do. Thats whats messing me up

Answer 4

Did you get the factors of 140?

Answer 5

Check out this online prime factor finder. Just enter 140.

http://www.calculatorsoup.com/calculators/math/prime-factors.php

Answer 6

How about 7 and 20? They multiply to 140 and add to 27.

Answer 7

but i thought we needed them to multiply to 70

Answer 8

On the first problem we did together, the coefficient of the x^2 term was 1.
And, 1 times whatever the last number was yielded just the last number.
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The numbers we want are the numbers that multiply to a*c and add to b.

In this problem, a = 2 and c = 70. b = 27.

We want two numbers that multiply to 140 and add to 27.

Just remember: Multiply to ac and add to b.

Answer 9

We cannot quit now.

Answer 10

By the way, it took me two weeks to learn to factor.

Answer 11

2m²+27m+70 = 2m^2 + 20m + 7m + 70

Answer 12

2m^2 + 20m + 7m + 70 = 2m ( m + 10) + 7(m + 10)

Answer 13

2m ( m + 10) + 7(m + 10) = (m + 10) (2m + 7)

Answer 14

@JaneDoe100

Answer 15

@Directrix sorry im watching my little sister and had to put her down for a nap. i think i understand it now

Answer 16

@JaneDoe100 No worries. Don't give up on learning to factor.

Answer 17

ok i wont