Question

please tell me answer mathematics class 7​

Answer 1

Answer:

your answer

Step-by-step explanation:

answer is B

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Answer 2

Answer:

2³

Step-by-step explanation:

Aim: To simplify the expression.

Let's 1st expand any terms if necessary:

8² = (2³)² = $2^6$                                             $(a^m)^n = a^{m*n}$

2³ = 2³

Now let's divide:

$2^6$ ÷ $2^3$ = $\frac{2^6}{2^3}$

          = $2^{6-3}$                                              $\frac{a^m}{a^n} = a^{m-n}$

          = $2^3$

Therefore, the solution is 2³.

Tips:

Always remember all the laws of exponents to solve such expressions. The key laws are:

$a^m * a^n = a^{m+n}$

$(a^m)^n = a^{m*n}$

$(ab)^n = a^nb^n$

$\frac{a^m}{a^n} = a^{m-n}$

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