find the cube of 5a+3b
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Answer:
125a³+27b³+ 225a²b +135ab²
Step-by-step explanation:
(5a+3b)³
(a+b)³=a³+b³+3a²b+3ab²
a=5a. ,b=3b
(5a+ 3b)³ = (5a)³+(3b)³+3(5a)²(3b) +3(5a)(3b)²
=. 125a³+27b³+225a²b +135ab²
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