find the value of the expression
987×987×987-357×357×357
____________________
987×987+987×357+357×357
a530
b) 735
c )630
d )525
Answers
Answered by
10
Answer:
c) 630
Step-by-step explanation:
987×987×987-357×357×357
____________________
987×987+987×357+357×357
(987)³-(357)³
= --------------------------------------
(987)²+(987×357)+(357)²
[ let, 987=a
357=b]
therefore,. a³-b³
---------------
a²+ab+b²
(a-b)(a²+ab+b²)
= ----------------------------
(a²+ab+b²)
= (a-b)
then, (a-b)
= (987-357)
= 630 (ans)
Answered by
2
Answer:
630
Step-by-step explanation:
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