When multiplying terms with the same base- the exponents nbsp-are - divided-subtractedadded-multiplied-

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Standard VIII

Mathematics

Multiplying Terms with Same Base

When multiply...

Question

When multiplying terms with the same base, the exponents are ____.

subtracted

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divided

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added

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multiplied

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Question 153(ii)

In a repeater machine with 0 as an exponent, the base machine is applied 0 times.
What do you think the value of $6^{o}$ is ?
You have seen that a hook up of repeater machines with the same base can be replaced by a single repeater machine. Similarly, when you multiply exponential expressions with the same base, you can replace them with a single expression.
Asif Raza thought about how he could rewrite the expression $2^{2} 0 \times 2^{5}$ .

Asif Raza's idea is one of the product laws of exponents, which can be expressed like this
Multiplying Expressions with the same base $a^{b} \times a^{c} = a^{b + c}$
Actually, this law can be used with more than two expressions. As long as the bases are the same, to find the product you can add the exponents and use the same base.
e.g. $3^{2} \times 3^{3} \times 3^{10} = 3^{2 + 3 + 10} = 3^{15}$

On multiplying terms with the same base, the exponents are ____.

When we multiply two exponents with the same base, then their powers are (added/multiplied). Tick the correct choice

Question 158(iii)

Find a single machine that will do the same job as the given hook-up.
$a (\times 5^{99})$ machine followed by a $(5^{- 100})$ machine.
Maya multiplied $(4^{2} \times 3^{2})$ by thinking about stretching machines.

Use Maya's idea to multiply $5^{3} \times 2^{3}$ .
Maya's idea is another product law of exponents.
Multiplying Expressions with the same Exponents
$a^{c} \times b^{c} = (a \times b)^{c}$
You can use this law with more than two expressions. If the exponents are the same, multiply the expressions by multiplying the bases and using the same exponent. e.g. $2^{8} \times 3^{8} \times 7^{8} = (2 \times 3 \times 7)^{8} = 42^{8}$ .

Q. If a number with different exponents are multiplied with each other, then what happens to their exponents?

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