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Step-1

Title: Find the sum or difference of polynomials.

Grade: 7-b Lesson: S4-L9

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Steps	Problem	Solution
1	Find the sum or difference of polynomials.	\$ (x^3 + 8x + 3) − (−x^3 + 2x^2 − 5) \$
2	Group like terms	\$ (x^3 + x^3) - 2x^2 + 8x + (3+5) \$
3	After Simplification	\$ 2x^3 - 2x^2 + 8x + 8 \$
4	Answer	A = \$ 2x^3 - 2x^2 + 8x + 8 \$

Steps

Problem

Solution

Find the sum or difference of polynomials.

\$ (x^3 + 8x + 3) − (−x^3 + 2x^2 − 5) \$

Group like terms

\$ (x^3 + x^3) - 2x^2 + 8x + (3+5) \$

After Simplification

\$ 2x^3 - 2x^2 + 8x + 8 \$

Answer

A = \$ 2x^3 - 2x^2 + 8x + 8 \$