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chadandtricia_2009
Group Title
What is the factored form of the expression?
k2 – 9h2
A. (k + 3h)(k + 3h)
B. h2(k + 3)(k – 3)
C. (k + 3h)(k – 3h)
D. (k – 3h2)(k + 3)
 2 years ago
 2 years ago
chadandtricia_2009 Group Title
What is the factored form of the expression? k2 – 9h2 A. (k + 3h)(k + 3h) B. h2(k + 3)(k – 3) C. (k + 3h)(k – 3h) D. (k – 3h2)(k + 3)
 2 years ago
 2 years ago

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chadandtricia_2009 Group TitleBest ResponseYou've already chosen the best response.1
can you show me how you got that please?
 2 years ago

doubledrive Group TitleBest ResponseYou've already chosen the best response.0
Nevermind, C
 2 years ago

chadandtricia_2009 Group TitleBest ResponseYou've already chosen the best response.1
i don't understand how to do it
 2 years ago

doubledrive Group TitleBest ResponseYou've already chosen the best response.0
K*K=K2 +3*3=9 H*H=H2
 2 years ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.2
It is C. You have to first recognize the fact that this is a difference in squares pattern. \[a^{2}  b^{2} = (a + b)(a  b)\]
 2 years ago

doubledrive Group TitleBest ResponseYou've already chosen the best response.0
Which becomes k29h2
 2 years ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.2
If you want to factor it without the pattern, then find factors of 9 that add up to 0. These factors are 3 and 3. THerefore, (k + 3h)(k – 3h)
 2 years ago

zeesbrat3 Group TitleBest ResponseYou've already chosen the best response.0
In this problem you are dealing with perfect squares, so it was easier just to square root them. However, that only works if all of them are actually perfect squares. If you don't know what a perfect square is, it is a number multiplied by itself.
 2 years ago

chadandtricia_2009 Group TitleBest ResponseYou've already chosen the best response.1
so what do I plug into the pattern?
 2 years ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.2
a = k b = 3h See how k is squared and 3h is squared as well? k^2 = k^2 3^2h^2 = 9h^2
 2 years ago

zeesbrat3 Group TitleBest ResponseYou've already chosen the best response.0
\[K timesK =K ^{2} 3h\times3h=9h /sqrt{9}=3\]
 2 years ago

zeesbrat3 Group TitleBest ResponseYou've already chosen the best response.0
sorry, it didnt space out like I planned..
 2 years ago

chadandtricia_2009 Group TitleBest ResponseYou've already chosen the best response.1
ok got it now.
 2 years ago

chadandtricia_2009 Group TitleBest ResponseYou've already chosen the best response.1
thanks alot all of you
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.0
@zeesbrat3 and @doubledrive In the future, please don't just give the answer (sometimes people just want to cheat and that is not what OpenStudy is about.) Please guide the user so that the person can come to the answer themselves. Also @chadandtricia_2009 thanks for asking for an explanation. :)
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.0
And that message goes to anyone I miss that didn't know the new CoC. thanks.
 2 years ago

doubledrive Group TitleBest ResponseYou've already chosen the best response.0
@myininaya for your information, i answered the question and i explained it.
 2 years ago
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