# How do you combine exponents?

## How do you combine exponents?

To add exponents, both the exponents and variables should be alike. You add the coefficients of the variables leaving the exponents unchanged. Only terms that have same variables and powers are added. This rule agrees with the multiplication and division of exponents as well.

## How do you simplify exponents in fractions?

Simplifying the fraction using quotient rule for exponents We’ll subtract the exponent in the denominator from the exponent in the numerator, keeping the base the same.

Can an exponent be a fraction in a polynomial?

Polynomials cannot contain fractional exponents. Terms containing fractional exponents (such as 3x+2y1/2-1) are not considered polynomials.

### What happens if the exponent is a fraction?

Fractional Exponents When the exponent is a fraction, you’re looking for a root of the base. The root corresponds to the denominator of the fraction. The denominator of the fraction is 3, so you’re looking for the 3rd root (or cube root) of 125. Because 5 x 5 x 5 = 125, the 3rd root of 125 is 5.

### When can you combine exponents?

When you’re multiplying exponents, use the first rule: add powers together when multiplying like bases. 52 × 56 =? The bases of the equation stay the same, and the values of the exponents get added together. Adding the exponents together is just a shortcut to the answer.

What do you do when you have two exponents?

Multiplying exponents You can only multiply terms with exponents when the bases are the same. Multiply the terms by adding the exponents. For example, 2^3 * 2^4 = 2^(3+4) = 2^7. The general rule is x^a * x^b = x^(a+b).

## What are the five rules of exponents?

What are the different rules of exponents?

• Product of powers rule.
• Quotient of powers rule.
• Power of a power rule.
• Power of a product rule.
• Power of a quotient rule.
• Zero power rule.
• Negative exponent rule.

## How do you factor polynomials with fractional exponents?

Expressions with fractional or negative exponents can be factored by pulling out a GCF. Look for the variable or exponent that is common to each term of the expression and pull out that variable or exponent raised to the lowest power. These expressions follow the same factoring rules as those with integer exponents.

Why is a fractional exponent not a polynomial?

Because a term is called a polynomial only when the variable is raised to a whole number power. If the power is fractional, the term wouldn’t be called a polynomial. The variable in a polynomial can have a fraction or decimal as its exponent.

### How do you combine exponents with the same base?

In order to multiply exponents with variables, we use the same rules that are used for numbers. For example, let us multiply y5 × y3. According to the exponent rule for multiplication with the same base, we simply add the powers. This means it will be y5 × y3 = y5 + 3 = y8.

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