Math, asked by 1978mamtabansal, 1 year ago

Factorise 7a^3+56b^3

Answers

Answered by grapes

53

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grapes: now it has common terms

1978mamtabansal: Oo

Anonymous: find out the Lcm of 12 ...it would be 4 and 3 ...

grapes: yes

Anonymous: Then split the middle term

Anonymous: in 4 and 3

1978mamtabansal: Ook

1978mamtabansal: Thanks

Anonymous: :)

1978mamtabansal: bye

Answered by Anonymous

54

Hey !!! ^_^

Here is your answer

⬇️⬇️⬇️⬇️⬇️⬇️

$7 {a}^{3} + 56 {b}^{3} \\ \\ let \: 7 \: be \ \:common \\ 7( {a}^{3} + 8 {b}^{3}) \\ \\ use \: the \: formula \: \\ {a}^{3} + {b}^{3} = (a + b)( {a}^{2} - ab + {b}^{2} ) \\ \\ 7( {a} + 2b)( {a}^{2} - 2ab + 4 {b}^{2})$

I HOPE IT WILL HELP YOU

Thank you

☺️

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