Mathematics
19 Online
OpenStudy (anonymous):
Multiply PLEASE HELP
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OpenStudy (anonymous):
Parth (parthkohli):
Use this property.
\(\Large \color{Black}{\Rightarrow {a \over b} \times {x \over y} = {ax \over by} }\)
Parth (parthkohli):
The denominator will remain the same. Multiply numerators.
OpenStudy (anonymous):
ok just amin im working on it
Parth (parthkohli):
\(\Large \color{Black}{\Rightarrow {(k + 3)(12k^2 + 2k -4) \over 4k - 2} }\)
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OpenStudy (anonymous):
im not sure is that the answer because its not in the options
Parth (parthkohli):
Simplify the numerator.
Parth (parthkohli):
\(\Large \color{Black}{\Rightarrow (k + 3)(12k^2 + 2k - 4) = k(12k^2 + 2k - 4) + 3(12k^2 + 2k -4) }\)
Parth (parthkohli):
Oops
Parth (parthkohli):
\(\Large \color{Black}{\Rightarrow k(12k^2 + 2k - 4) + 3(12k^2 + 2k - 4) }\)
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OpenStudy (anonymous):
3 (k + 3) 2k-1/2
Parth (parthkohli):
What?
OpenStudy (anonymous):
lol just a min lemme re type that
OpenStudy (anonymous):
OpenStudy (anonymous):
i think this is the answer...im not sure
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Parth (parthkohli):
\(\Large \color{Black}{\Rightarrow 12k^3 + 2k^2 - 4k + 36k^2 + 6k - 12 }\)
Parth (parthkohli):
Be patient.
OpenStudy (anonymous):
ok...
Parth (parthkohli):
\(\Large \color{Black}{\Rightarrow 12k^3 + 38k^2 +2k - 12 }\)
\(\Large \color{Black}{\Rightarrow 2k(6k^2 + 38k + 1) - 12 }\)
OpenStudy (anonymous):
this is option b
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OpenStudy (anonymous):
c.(k + 3)(3k + 2)
d.(3k + 1)(2k + 3)
OpenStudy (anonymous):
basically im still cnnfused i dont know how ot get a solid answer
Parth (parthkohli):
You may use a calculator, or wolfram.
OpenStudy (anonymous):
hold on
OpenStudy (anonymous):
im so confused eight now
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OpenStudy (anonymous):
right*
Parth (parthkohli):
Lol no need.
Parth (parthkohli):
Just factor the numerator.
OpenStudy (ajprincess):
Factorise the numerator and the denominator. Then cancel out the common factors.
Parth (parthkohli):
A better way is to divide both numerator and denominator by 2.
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OpenStudy (anonymous):
i think i got the answer thanks guys
Parth (parthkohli):
Hmm you bet :)