Question

Evaluate using identities 53 x 55

Answer 1

53×55= (50+3) (50+5)
by identity (x+a)(x+b)=x²+(a+b)x+ ab
50²+(3+5)50+3×5
2500+400+15
2915 ans....
hope it helps you

Answer 2

Hey here is your answer
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= 53 × 55
= ( 55 - 2 ) × 55
= (55 × 55 ) - ( 2 × 55 )
= 3025 - 110
= 2915
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