The correct option is A 10506 (100 + 2) × (100 + 3) nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;[Using (x +a) (x+b)=x^2+(a+b)x+ ab ] = (10 ...

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Solving a Quadratic Equation by Factorization Method

102 × 103

Question

$102 \times 103$

10506

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Solution

The correct option is A 10506
$(100 + 2) \times (100 + 3)$
[Using $(x + a) (x + b) = x^{2} + (a + b) x + a b$ ]
$= (100)^{2} + (2 + 3) \times 100 + 2 \times 3$
$= 10000 + 5 \times 100 + 6 = 10000 + 500 + 6 = 10506$

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