if ab=5,a-b=2 find a^3-b^3
Answers
Answered by
1
Answer:
38
Step-by-step explanation:
Given : ab=5
a-b=2
To Find : a^3-b^3
Solution :
Formula :(a-b)^{3} =a^3-b^3-3ab(a-b)
Substitute the given values
(2)^{3} =a^3-b^3-(3*5)(2)
8=a^3-b^3-(15)(2)
8=a^3-b^3-30
8+30=a^3-b^3
38=a^3-b^3
Hence the value of a^3-b^3 is 38
Similar questions