if a=7 b=5 find the value of (a-b)(a^2+ab+b^2)
Answers
Answered by
5
Answer:
218
Step-by-step explanation:
(a-b)(a^2+ab+b^2)
=a^3-b^3
Putting a=7& b=5
7^3-5^2
=343-125
=218
Answered by
2
Answer:
218
(a-b)(a^2+2ab+b^2-ab)
(a-b)[(a+b)^2-ab]
putting values
(7-5)[(7+5)^2-7*5]
(2)(144-35)
2(109)
218
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