Unit 2 Test (Pre-Algebra)

A monomial is a polynomial with only one term, which can be a number, a variable, or a product of numbers and variables.

To simplify a monomial expression, combine like terms by adding or subtracting their coefficients.

The formula is \( \frac{a}{b + c} \), where \( a \) is the number being divided, \( b \) is the variable, and \( c \) is the constant.

Factoring an expression means to break it down into simpler components (factors) that, when multiplied together, give the original expression.

To multiply, multiply the coefficients (2.1 and 3.0) and add the exponents (2 and 4) to get \( 6.3 \times 10^6 \).

The expression is \( x + c \), where \( x \) is the number and \( c \) is the constant.

A coefficient is a numerical factor in a term of a polynomial, representing how many times the variable is multiplied.

A term is a single mathematical expression (like 3x or 5), while a polynomial is a sum of multiple terms (like 3x + 5y + 2).

Like terms are terms that have the same variable raised to the same power, differing only in their coefficients.

To combine like terms, add or subtract their coefficients while keeping the variable part the same.