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Algebraic Expressions and Identities — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSAlgebraic Expressions and Identities3 Marks
Question
Multiply:
$(2x + 8) by (x - 3)$
✓

Answer

To multiply, we will use distributive law as follows: $(2x + 8) by (x - 3)$
$ = 2x(x - 3) + 8(x - 3) $
$= (2x × x - 2x × 3) + (8x - 8 × 3) $
$= (2x^2- 6x) + (8x - 24) $
$= 2x^2- 6x + 8x - 24$
$= 2x^2+ 2x - 24$
Thus, the answer is $2x^2+ 2x - 24.$

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