If a+b=10 and a square +b square=58,find the value of a cube+b cube
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4
370 is the correct answer
Answered by
8
a+b=10
a²+b²=58
a³+b³=?
(a+b)²=a²+b²+2ab
(10)²=58+2ab
100-58=2ab
42=2ab
42/2=ab
24=ab
a³+b³=(a+b)(a²+b²-ab)
=10(58-24)
=10*37
=370
a²+b²=58
a³+b³=?
(a+b)²=a²+b²+2ab
(10)²=58+2ab
100-58=2ab
42=2ab
42/2=ab
24=ab
a³+b³=(a+b)(a²+b²-ab)
=10(58-24)
=10*37
=370
likhi11:
No answer should be 370
It's wrong
ok i corrected it
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