Question

find the product using suitable identity 102x99
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Answer 1

*_A_N_S_W_E_R_

We know 102×98 = (100+2)(100−2)

We know 102×98 = (100+2)(100−2)Using identity (x+y)(x−y)=x²- y²

Therefore, (100+2)(100−2) =(100)²- (2)²

=10000−4

=10000−4=9996

$hope \: you \: like \: it.$

Answer 2

Answer:

9720

Step-by-step explanation:

102×99

(100+2) (100-1)

Using identity - x^2-(a+b)x+ab

x=100, a=2, b=1

100^2-(2+1)×100+(2×1)

= 10000-300+2

= 9720

Hope this helps you!!

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