pls ans with process
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nehachetry:
yeah we can solve it by using firmula
I mean formula
Answers
Answered by
0
I think you can use the formula ?
how and which?
(a+b)2 and (a+b)3
Answered by
1
Heya !! ☺
65(a+b)² - 13(a+b)³
=> 65(a²+b²+2ab) - 13[a³+b³+3ab(a+b)]
=> 65a²+65b²+130ab - 13(a³+b³+3a²b+3ab²)
=> 65a²+65b²+130ab - 13a³+13b³+39a²b+39ab²
65(a+b)² - 13(a+b)³
=> 65(a²+b²+2ab) - 13[a³+b³+3ab(a+b)]
=> 65a²+65b²+130ab - 13(a³+b³+3a²b+3ab²)
=> 65a²+65b²+130ab - 13a³+13b³+39a²b+39ab²
wow well done
Thanks ❤
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