8 a cube +27 b cube +125 c cube -90 abc????
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Answer:
(2a+3b+5c) ( 4a²+9b²+25c²-6ab-15bc-10ca)
Step-by-step explanation:
8a³+27b³+125c³-90abc
=(2a)³+(3b)³+(5c)³-3(2a)(3b)(5c)
=(2a+3b+5c){( 2a)²+(3b)²+(5c)²-(2a)(3b)-(3b)(5c)-(5c)(2a) }
=(2a+3b+5c) ( 4a²+9b²+25c²-6ab-15bc-10ca)
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