Question

evalute using identities 47×38​

Answer 1

Answer:

Step-by-step explanation:

Using Identity (x+a)(x+b)=x²+(a+b)x+ab

Here  x=40

         a=7

         b=(-2)

=40²+(7-2)40+(-14)

= 1600+200-14

= 1800-14

= 1786

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