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arlik [135]
3 years ago
14

(-12a^3b^5)/(4a^2b^7)

Mathematics
1 answer:
Serggg [28]3 years ago
5 0

Answer:

a\neq 0 \text{ and } b\neq 0

Step-by-step explanation:

So we have the rational expression:

\frac{-12a^3b^5}{4a^2b^7}

In rational expressions, the restrictions of the expression would be the zeros of the denominator Therefore, set the denominator equal to zero and solve for its zeros:

4a^2b^7=0

Zero Product Property:

4a^2=0\text{ or } b^7=0\\

Solve for a and b:

4a^2=0 \text{ or } b^7=0\\a\neq 0 \text{ or }b\neq 0

Therefore, the restrictions on the variables are that a and b cannot equal zero.

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Elena L [17]

The equations a = n, b = 2n + 6 and c = n² - 1 are polynomials, and the expression for ab - c is n² + 6n + 1

<h3>How to determine the expression for ab - c?</h3>

The polynomials are given as:

a = n

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The expression ab - c is calculated using:

ab - c = n * (2n + 6) - (n² - 1)

Expand

ab - c = 2n² + 6n - n² + 1

Collect like terms

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Evaluate

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Answer:

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Step-by-step explanation:

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