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4. Simplify the expression: [tex]h^4\left(h^3\right)^{-6}[/tex]

A. [tex]h[/tex]
B. [tex]\frac{1}{h^{14}}[/tex]
C. [tex]h^{72}[/tex]
D. [tex]\frac{1}{h^5}[/tex]


Sagot :

Let's start with the given expression:

[tex]\[ h^4 \left( h^3 \right)^{-6} \][/tex]

To simplify the expression step-by-step:

1. Simplify the powers inside the parenthesis:

[tex]\[\left(h^3\right)^{-6}\][/tex]

Recall that [tex]\(\left(a^m\right)^n = a^{mn}\)[/tex]. Applying this rule, we get:

[tex]\[\left(h^3\right)^{-6} = h^{3 \cdot (-6)} = h^{-18}\][/tex]

2. Combine the two expressions:

Now substitute [tex]\(h^{-18}\)[/tex] back into the original expression:

[tex]\[h^4 \cdot h^{-18}\][/tex]

3. Use the property of exponents:

When you multiply expressions with the same base, you add the exponents: [tex]\(a^m \cdot a^n = a^{m+n}\)[/tex]. Applying this rule, we get:

[tex]\[h^4 \cdot h^{-18} = h^{4 + (-18)}\][/tex]

Simplify the exponent:

[tex]\[h^{4 - 18} = h^{-14}\][/tex]

The simplified form of the expression is:

[tex]\[h^{-14}\][/tex]

Given the multiple choice options, we rewrite [tex]\(h^{-14}\)[/tex] in a more recognizable form:

[tex]\[h^{-14} = \frac{1}{h^{14}}\][/tex]

Thus, the simplified expression corresponds to:

[tex]\[\boxed{\frac{1}{h^{14}}}\][/tex]