Ask your own question, for FREE!
Mathematics 22 Online
OpenStudy (sorryimfrankie):

Cant decide on an answer for math

OpenStudy (sorryimfrankie):

OpenStudy (sorryimfrankie):

I say its B, a friend says its D

ganeshie8 (ganeshie8):

Hint : Try figuring out the constant term

OpenStudy (sorryimfrankie):

Would it be 7?

ganeshie8 (ganeshie8):

What is -C^2 ?

ganeshie8 (ganeshie8):

C = x-3 C^2 = ?

OpenStudy (sorryimfrankie):

I'm sorry, I'm lost, where are you getting C from?

ganeshie8 (ganeshie8):

From the given question

ganeshie8 (ganeshie8):

Frankie as in Frankenstein ?

OpenStudy (sorryimfrankie):

Oh, I'm sorry, I was looking at the expression

OpenStudy (sorryimfrankie):

Haha, no, my real name is Frankie

OpenStudy (sorryimfrankie):

Okay so, we have (x-3)^2, right?

ganeshie8 (ganeshie8):

Nice okay haha

ganeshie8 (ganeshie8):

Yes, expand

OpenStudy (sorryimfrankie):

Okay, I plugeed everything in and got \[(x^2)(3x+2) - (x-3)^2\]

ganeshie8 (ganeshie8):

Very good. Distribute

OpenStudy (sorryimfrankie):

\[3x^3 + 2x^2 - x - 3\]

OpenStudy (sorryimfrankie):

is that right?

ganeshie8 (ganeshie8):

No

OpenStudy (sorryimfrankie):

or is it D?

ganeshie8 (ganeshie8):

You need to expand (x-3)^2 too

OpenStudy (sorryimfrankie):

\[3x^3 + x^2 + 6x – 9\]

ganeshie8 (ganeshie8):

Yes D is the correct option

OpenStudy (sorryimfrankie):

Okay, thanks so much

ganeshie8 (ganeshie8):

Well done!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!