# Algebra

Please perform the indicated operations and simplify

(3x-5)^2-(2x+1)(x-4)

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1. (3x-5)^2-(2x+1)(x-4)
use FOIL to expand each one

= 9x^2 - 30x + 25 - (2x^2 - 8x + x - 4)

now simplify

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2. Yes but doesn't -8x and x combine to become -7x? so then it should look like this?

-2x^2 -7x -4?

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3. of course ...
that is what I meant by simplify.

I was expecting you to finish the question.

can you tell me what the next few lines would be ?

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4. 9x2-30x+25
-2x2 -7x -4
--------------
7x2 -23+29
Is this correct?

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5. Thanks Breanna! Looks correct to me!

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6. Perform the indicated operations and simplify (2x - 6) (x + 1) - (x - 7)^2

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