Evalute using identities 1004 x 1009 – InterviewSolution

1.

Evalute using identities 1004 x 1009

Answer»

Answer:

1004 = 1000 +4

1009 = 1000 +9

(x+a)(x+b) = x^2 +(a+b)*x + a*b

(1000+4) (1000+9) = 1000^2 +(4+9)*1000 + 4*9

= 1000000 +(14)*1000 + 36

= 1000000 +14000 +36

= 1014036

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