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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)
 one year ago
 one year ago
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)
 one year ago
 one year ago

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chadandtricia_2009Best ResponseYou've already chosen the best response.1
can you show me how you got that please?
 one year ago

chadandtricia_2009Best ResponseYou've already chosen the best response.1
i don't understand how to do it
 one year ago

doubledriveBest ResponseYou've already chosen the best response.0
K*K=K2 +3*3=9 H*H=H2
 one year ago

CalcmathleteBest 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. \[a^{2}  b^{2} = (a + b)(a  b)\]
 one year ago

doubledriveBest ResponseYou've already chosen the best response.0
Which becomes k29h2
 one year ago

CalcmathleteBest 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)
 one year ago

zeesbrat3Best 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.
 one year ago

chadandtricia_2009Best ResponseYou've already chosen the best response.1
so what do I plug into the pattern?
 one year ago

CalcmathleteBest 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
 one year ago

zeesbrat3Best ResponseYou've already chosen the best response.0
\[K timesK =K ^{2} 3h\times3h=9h /sqrt{9}=3\]
 one year ago

zeesbrat3Best ResponseYou've already chosen the best response.0
sorry, it didnt space out like I planned..
 one year ago

chadandtricia_2009Best ResponseYou've already chosen the best response.1
ok got it now.
 one year ago

chadandtricia_2009Best ResponseYou've already chosen the best response.1
thanks alot all of you
 one year ago

myininayaBest 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. :)
 one year ago

myininayaBest ResponseYou've already chosen the best response.0
And that message goes to anyone I miss that didn't know the new CoC. thanks.
 one year ago

doubledriveBest ResponseYou've already chosen the best response.0
@myininaya for your information, i answered the question and i explained it.
 one year ago
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