Adding and Subtracting Polynomials

Front

What is a polynomial?

Back

A polynomial is a mathematical expression that consists of variables, coefficients, and non-negative integer exponents, combined using addition, subtraction, and multiplication.

Front

What are like terms in a polynomial?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms.

Front

How do you combine like terms?

Back

To combine like terms, add or subtract their coefficients while keeping the variable part the same. For example, 3x + 5x = 8x.

Front

What is the degree of a polynomial?

Back

The degree of a polynomial is the highest power of the variable in the expression. For example, in 4x^3 + 2x^2 - x, the degree is 3.

Front

What is the sum of (2x + 3) and (4x + 5)?

Back

6x + 8.

Front

What is the result of (x^2 + 2x) + (3x^2 + 4)?

Back

4x^2 + 2x + 4.

Front

How do you subtract polynomials?

Back

To subtract polynomials, distribute the negative sign to each term of the polynomial being subtracted, then combine like terms.

Front

What is the result of (5x - 3) - (2x + 4)?

Back

3x - 7.

Front

What is the sum of (3x^2 + 2x - 1) and (x^2 - 4x + 5)?

Back

4x^2 - 2x + 4.

Front

What is the result of (6x + 7) + (12x + 3)?

Back

18x + 10.