Question

evaluate 203X198 by using sutiable identity​

Answer 1

Step-by-step explanation:

203x198 can be written as

(200+3)&(200-2)

assume 200 as x

3 as a

2 as b

by using identity :x^2+(a+b)x- ab

we get

200^2 +(3+[-2])200-3.2

=40000+200-6

=40194

that's the answer ....

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