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Algebraic Expressions and Identities — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsAlgebraic Expressions and Identities2 Marks
Question
Evaluate the following:
$102 \times 106$
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Answer

Here, we will use the identity $(x+a)(x+b)=x^2+(a+b) x+a b$.
$102 \times 106$
$=(100+2)(100+6)$
$=100^2+(2+6) 100+2 \times 6$
$=10000+800+12$
$=10812$

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