Question

help ASAP please! I will fan and medal\\

Which expression is equivalent to 4s3 + 5s2 – 12s – 15?
A. (s2 – 3)(4s + 5)
B. (s – 3) (4s + 5)
C. (s2 + 3)(4s – 5)
D. (2s – 5) (2s – 3)

Answer 1

Have you considered multiplying the four expressions to see what you get?

Answer 2

Yes. I think it's C @tkhunny

Answer 3

or A

Answer 4

"think" is no good. Multiply them.

Only A and C give 4s^3, so that rules out B and D.

Now what? Prove it. Don't guess.

Answer 5

Okay. Well C then..

Answer 6

@tkhunny

Answer 7

I'm not positive. Could you walk me through it please

Answer 8

We're just multiplying binomials. You show me what you get...

(s2 – 3)(4s + 5) = 4s^3 ......

What are the other 3 pieces?

Answer 9

(s2 – 3)(4s + 5)
B. (s – 3) (4s + 5)
C. (s2 + 3)(4s – 5)
D. (2s – 5) (2s – 3)

Answer 10

whoa its not working

Answer 11

hich expression is equivalent to 4s3 + 5s2 – 12s – 15? A. (s2 – 3)(4s + 5) B. (s – 3) (4s + 5) C. (s2 + 3)(4s – 5) D. (2s – 5) (2s – 3)

Answer 12

What are you doing? Just answer my question.

(s2 – 3)(4s + 5) = 4s^3 ...... What are the other 3 pieces? I multiplied the first two. You get all the other combinations.

Answer 13

I don't know.. I'm sorry I am struggling with this

Answer 14

Bear with me on this. Just answer the question...

What is 45 * 18? Can you do it by hand! No calculator?

Answer 15

yes .. 810

Answer 16

How did you do that?

Answer 17

Did you multiply all these combinations?

4*1
4*8
5*1
5*8

Is that how you did it?

Answer 18

yes

Answer 19

Okay, then do the EXACT same thing with this: (s2 – 3)(4s + 5)

Make all four combinations and see what each result is.