Evaluate the following: 53 55 - Vidyadip

Question

Evaluate the following:
$53 \times 55$

✓

Answer

Here, we will use the identity $(x+a)(x+b)=x^2+(a+b) x+a b$.
$53 \times 55$
$=(50+3)(50+5)$
$=50^2+(3+5) 50+3 \times 5$
$=2500+400+15$
$=2915$

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