solve with the identity .fastt.. please with explain
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1
Answer:
Step-by-step explanation:
a.(500+15)^2=(a+b)^2
a^2+2ab+b^2
500^2+2*500*15+15^2
2,50,000+15000+225
=265225
b.check the link
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0
Answer:
a. 265225
b. 9888
Step-by-step explanation:
a. (515)²
( 500 + 15 )²
(500)² + (15)² + 2 × 15 x 500........(a + b)² = a² + b² + 2ab
250000 + 225 + 15000
265225
b. 103 × 96
( 100 + 3 ) × ( 100 - 4 )
(100)² + 100( 3 - 4) - 3 × 4.....(x + a) (x - b) = x² + x(a - b) - ab
10000 + 100(-1) - 12
10000 - 100 - 12
9888
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