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July 22, 2014

July 22, 2014

Posted by **unknown** on Thursday, August 23, 2007 at 10:18pm.

(2y-3)^2

a.4y^2+9

b.4y^2-6y+9

c.4y^2-12y+9

d.4y^2+12y+9

i got A but i wanna make sure....

- Algebra1 -
**Mr. Kim**, Thursday, August 23, 2007 at 10:38pmyes... A. is the correct answer.

- Algebra1 -
**DrBob222**, Thursday, August 23, 2007 at 10:39pmJust expand the binomial.

You know how to do it?

First term is (2y)^2 = 4y^2.

Second term is twice the product inside the parentheses which is 2y*-3 = -6y and twice that is -12y.

The third term is the last number squared which is -3^{2}or +9. Do you see any answers that fit that? I do. If you will learn the method I showed you, you can do these things in your head.

- Algebra1 -
**DrBob222**, Thursday, August 23, 2007 at 10:41pmA point of clarification: A is not the correct answer.

- Algebra1 -
**Mr. Kim**, Thursday, August 23, 2007 at 10:44pm:P

- Algebra1 -

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