(2x-y)^3-(2x+y)^3 Plz help solving this..
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Answered by
0
Hey Friend...
(2x-y)³ - (2x+y)³
(a-b)³=a³-b³-3ab(a-b); (a+b)³ = a³+b³+3ab(a+b)
Now u can solve...
(2x-y)³ - (2x+y)³
(a-b)³=a³-b³-3ab(a-b); (a+b)³ = a³+b³+3ab(a+b)
Now u can solve...
conjureroman:
wrong from step 3
Answered by
1
Hey friend
राधे राधे
Given=> (2x-y)³-(2x+y)³
By I'd.=>[a+b]³ = [a³+b³+3ab²+3a²b]
AND
By I'd =>[a-b]³ = [a³-b³+3ab²-3a²b]
=> 8x³-y³+6xy²-12x²y-[8x³+y³+6xy²+12x²y]
=>8x³-y³+6xy²-12x²y-8x³-y³-6xy²-12x²y
=> -2y³-24x²y
=> -2y [y²+12x²]
Be perfectionist
राधे राधे
Given=> (2x-y)³-(2x+y)³
By I'd.=>[a+b]³ = [a³+b³+3ab²+3a²b]
AND
By I'd =>[a-b]³ = [a³-b³+3ab²-3a²b]
=> 8x³-y³+6xy²-12x²y-[8x³+y³+6xy²+12x²y]
=>8x³-y³+6xy²-12x²y-8x³-y³-6xy²-12x²y
=> -2y³-24x²y
=> -2y [y²+12x²]
Be perfectionist
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