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Step-3

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.	\$ (2x^3 + 5x^2 − x) + (x^3 − 10x^2 + 5x) \$
2	Group like terms	\$ (2x^3 + x^3) + (5x^2 − 10x^2) + (-x + 5x) \$
3	After Simplification	\$ 3x^3 - 5x^2 + 4x\$
4	Answer	B = \$ 3x^3 - 5x^2 + 4x \$

Steps

Problem

Solution

Find the sum or difference of polynomials.

\$ (2x^3 + 5x^2 − x) + (x^3 − 10x^2 + 5x) \$

Group like terms

\$ (2x^3 + x^3) + (5x^2 − 10x^2) + (-x + 5x) \$

After Simplification

\$ 3x^3 - 5x^2 + 4x\$

Answer

B = \$ 3x^3 - 5x^2 + 4x \$