Grade 12th passAlgebra
if 2a+3b=5c then find (8a^3+27b^3-125c^3), when abc=0
1 Answer
Arun
P3 + Q3 + R3 - 3PQR = (P + Q + R )(P2 + Q2 + R2 - PQ - QR - PR)
Here
P = 2a , Q = 3b, R = - 5c
Hope now you can solve it easily.
In case of any difficulty, please feel free to ask
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