nicc96
The area of a small square sample of carpet is 2w² - 7w – 15 in square yards. Which of the following could be the length of the sample?
A. w – 3
B. 2w + 3
C. 2w - 5
D. w + 5
The area of a rectangular counter top is w2 – 3w – 10. Which of the following could be the length of the counter top?
A. w – 10
B. w – 3
C. w + 2
D. w + 5
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Numb3r1
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This is asking you to factorize the trinomials.
Kaederfds
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2w² - 7w – 15 = (2w+3) (w-5)
[B]
Numb3r1
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Correct, and the second one... (let them solve it, please)
Kaederfds
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yes, @nicc96 now solve the other one (:
dan815
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|dw:1368681775940:dw|
dan815
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learn to factor!
dan815
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PLEASE LEARN TO FACTOR!
nicc96
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why are you screaming?
dan815
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SO U LEARN TO FACTOR
nicc96
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its not helping me.
dan815
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bahahahahahah
dan815
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do u want me to whisper!
nicc96
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im about to close the question anyhow but thanks ways ...I think lol
dan815
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u know how to factor that alreadY?
nicc96
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not really.ill figure it out
dan815
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ok, look up on youtube lots of videos!
nicc96
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okayy
dan815
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|dw:1368682071586:dw|
nicc96
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3
nicc96
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I think
dan815
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fist think about the multiplying to -10 the adding part will come automatically
dan815
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|dw:1368682177957:dw|
dan815
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which one of those numbers that multiply to give - 10 add to give -3?
dan815
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|dw:1368682262652:dw|
nicc96
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yeah I think ill review this again but thanks for the help
dan815
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ok
dan815
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thats your best option! if you ask me! learn this still really well, its very important for later
dan815
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learn factoring and quadratic equation, the 2 most important things at this level of math
Chris911
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@dan815 wouldn't this be w+5 after u factor??
Chris911
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@dan815
dan815
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what w+5??
dan815
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oh um the factor is (w-5)(w+2)= w^2-3w-10