Algebraic Expressions and Identities — Maths STD 8 — Question
Maharashtra BoardEnglish MediumSTD 8MathsAlgebraic Expressions and Identities3 Marks
Question
Find following product:
$5 x^2 \times 4 x^3$
✓
Answer
To multiply algebraic expressions, we use commutative and associative laws along with the laws of indices. However, use of these laws are subject to their applicability in the given expressions.
In the present problem, to perform the multiplication, we can proceed as follows:
$5 x^2 \times 4 x^3$
$=(5 \times 4) \times\left(x^2 \times x^3\right)$
$=20 x^5\left(\because a^{m} \times a^{n}=a^{m+n}\right)$
Thus, the answer is $20 x^5$.
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