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Step-4

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 + 9x) − (4x^3 − x) \$
2	Group like terms	\$ (x^3 - 4x^3) + (9x + x) \$
3	After Simplification	\$ -3x^3 + 10x\$
4	Answer	D = \$ -3x^3 + 10x \$

Steps

Problem

Solution

Find the sum or difference of polynomials.

\$ (x^3 + 9x) − (4x^3 − x) \$

Group like terms

\$ (x^3 - 4x^3) + (9x + x) \$

After Simplification

\$ -3x^3 + 10x\$

Answer

D = \$ -3x^3 + 10x \$