A3 +b3=35 & a+b = 5 find ab
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Answered by
6
Answer:
ab = 6
Step-by-step explanation:
a³+b³ = 35 ------(1)
a+b = 5 ---------(2)
Cubing eq(2) on both sides
(a+b)³ = 5³
(a³+b³) + 3ab(a+b) = 125
35 + 3ab (5) = 125
15ab = 125 - 35
ab = 90/15
ab = 6
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Answered by
5
Answer:
my dear ur ans is 6
Step-by-step explanation:
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