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Mathematics 19 Online
OpenStudy (anonymous):

Multiply PLEASE HELP

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):

\(\Large \color{Black}{\Rightarrow {(k + 3)(12k^2 + 2k -4) \over 4k - 2} }\)

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):

\(\Large \color{Black}{\Rightarrow k(12k^2 + 2k - 4) + 3(12k^2 + 2k - 4) }\)

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

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

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

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.

OpenStudy (anonymous):

i think i got the answer thanks guys

Parth (parthkohli):

Hmm you bet :)

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