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Algebraic Expressions — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSAlgebraic Expressions2 Marks
Question
Subtract:
$\left(a^2+b^2-2 a b\right)$ from $\left(a^2+b^2+2 a b\right)$
✓

Answer

$\left(a^2+b^2-2 a b\right)$ from $\left(a^2+b^2+2 a b\right)$
$=\left(a^2+b^2+2 a b\right)-\left(a^2+b^2-2 a b\right)$
$ =a^2+b^2+2 a b-a^2-b^2+2 a b$
$ =a^2-a^2+b^2-b^2+2 a b+2 a b$
$ =4 a b$

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