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Maths CBSE Live product
Class 8
We Distribute, Yet Things Multiply
Multiplication of monomials
9.
TBQ - Find the Expansion
Question:
4
m.
Q1.
Expand \(\frac{3a}{2}(a - b + \frac{1}{10})\).
The law used to expand the product is
Distributive property
Closure property
Commutative property
.
The exponential law used in expanding the first term is
x
m
×
x
n
=
i
i
+
i
.
\(\frac{3a}{2}(a - b + \frac{1}{10})\) \(=\)
i
i
i
i
−
i
i
i
i
+
i
i
i
Q2.
Can any two terms be added to get a single term?
Yes, the last two terms can be added as they have a common factor 3a.
Yes, the first two terms have the same fractional value, so, they can be simplified further.
No two terms in the expression are like terms, so they cannot be added.
Yes, the first and the last terms can be added as they have the same fractional value.
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