Using suitable identity find the value of: (87 3 +13 3 )/ (87 2 - 87 x 13 + 13 2 )
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Answered by
32
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ruthvikbannu532:
-7.9213
u mistaken
change your answer
where's the identity
Answered by
8
(873+133)/(872-87*13+132)
= 1006/872-1131+132
= 1006/872-1263
= 1006/-391
= -2.57
= 1006/872-1131+132
= 1006/872-1263
= 1006/-391
= -2.57
I think it's wrong because maths always follow BODMAS rule
87*13 is negative and 132 is positive
yeah,132 is positive so addition first
it is not 87*3, it 87 cube+ 13 cube
For power they use ^
For multiplication they use *
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