Adding and Subtracting Polynomials Explained

Combine like terms

Rewrite the question without parentheses

Arrange the polynomial in descending order

Distribute the positive and negative signs

Distribute the signs across the terms inside

Combine them

Multiply them

Ignore them

Multiplying variables

Subtracting exponents

Adding coefficients of the same variables

Dividing coefficients

-3x^2

3x^2

-7x^2

7x^2

Constant term

Term with the highest exponent of x

Term with x to the power of 1

Term with the lowest exponent of x

Remove the parentheses without changing the signs

Distribute it as a positive sign

Ignore it

Distribute it across the terms inside the parentheses

Rewrite the polynomial in ascending order

Arrange the polynomial in descending order

Simplify the exponents

Combine all constant terms

A negative sign

A positive sign

Unchanged

Zero

16y

9y

y^2

8y^2

-6x + 9y

9y - 6x

-9y + 6x

6x - 9y