So Dividing 53= 50+3 and 55 =50+5 #10;So we get, (50+3)(50+5) #10;Using formula (x+a)(x+b) = x^2+(a+b)x+ab #10;= 50^2+[ ...

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Algebraic Identities

Evaluate: 5...

Question

Evaluate: $53 \times 55$

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Solution

So Dividing $53 = 50 + 3$ and $55 = 50 + 5$
So we get, $(50 + 3) (50 + 5)$
Using formula $(x + a) (x + b)$ = $x^{2} + (a + b) x + a b$
= $50^{2} + [(3 + 5) 60] + (3) (5)$
= $2500 + 480 + 15$
Solution:- $2995$

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