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Algebraic Expressions — Maths STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7MathsAlgebraic Expressions2 Marks
Question
Find the following product:
$\left(x^2-a^2\right)(x-a)$
✓

Answer

$\left(x^2-a^2\right)(x-a)$
$=x^2(x-a)-a^2(x-a)$
$=\left(x^2 \times x-x^2 \times a\right)-\left(a^2 \times x-a^2 \times a\right)$
$=x^3-a x^2-a^2 x+a^3$

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