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March 30, 2017

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i think i have to simplify.... but the question just says:
(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 - ,

    yes... A. is the correct answer.

  • Algebra1 - ,

    Just 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 -32 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 - ,

    A point of clarification: A is not the correct answer.

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