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Mathematics 6 Online
OpenStudy (anonymous):

multiply ...

OpenStudy (anonymous):

\[\frac{ k+3 }{ 4k-2 }\times \left( 12k ^{2} +2k-4\right)\]

OpenStudy (ajprincess):

Try to factorise 12k^2+2k-4 and tell me vat u get

OpenStudy (anonymous):

no clue

OpenStudy (anonymous):

i am no good at this stuff

OpenStudy (ajprincess):

well can u tell me two factors of -48 such that their sum is 2?

OpenStudy (anonymous):

-8 and 6

OpenStudy (ajprincess):

well it is other way round. i mean the numbers are 8 and -6. Nw 2x can be written as 8x-6x. agree?

OpenStudy (anonymous):

sure

OpenStudy (ajprincess):

\(12k^2+2k-4=12k^2+8k-6k-4\). Nw can u factorise \(12k^2+2k\)?

OpenStudy (anonymous):

still dont get it

OpenStudy (ajprincess):

\(12k^2+2k=(2*6*k*k)+(2*k)\) What is common to both \(12k^2 and 2k\)?

OpenStudy (anonymous):

1 and 2 ?

OpenStudy (ajprincess):

2k is common

OpenStudy (anonymous):

ok

OpenStudy (ajprincess):

take it out. then what remains?

OpenStudy (anonymous):

\[12k ^{2}\]

OpenStudy (ajprincess):

|dw:1368552600854:dw|

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