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OpenStudy (anonymous):
show all work. Find the difference:
-5(x^2 + 2x – 5) – (7x^2 – 2x – 3)
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OpenStudy (anonymous):
Distribute the -5 into the first polynomial. Then distribute the -1 into the second polynomial. Then combine like terms.
OpenStudy (anonymous):
-5x^2 -10x +25 -7x^2 +4x +3
OpenStudy (anonymous):
combine like terms and that is all.
OpenStudy (anonymous):
-5x^2 - 7x^2 + 10x + 4x + 25 + 3 ?
OpenStudy (anonymous):
Yes, you put the like terms near each other. Now combine.... -5x^2 -7x^2 = -12x^2.....do that with the x-term and the constants.
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OpenStudy (anonymous):
i am lost after that..
OpenStudy (anonymous):
-5x^2 - 7x^2 = -12x^2 10x+4x = 14x 25 +3 = 28
-12x^2 + 14x +28
OpenStudy (anonymous):
Sorry. You got it though.
OpenStudy (anonymous):
You wrote 28 twice...but the rest is right.
OpenStudy (anonymous):
you have 28 - 12x^2 + 14x + 28 as the final answer above both 28's supposed to be there?
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OpenStudy (anonymous):
I wrote 25+3 = 28...then the next line i started the final answer. Only one 28 is needed
OpenStudy (anonymous):
oh ok i c thank you my mistake appreciate yur help
OpenStudy (anonymous):
No problem. You're welcome.
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