Easy Math Step-by-Step by Sandra Luna McCune
Author:Sandra Luna McCune
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2019-01-02T16:00:00+00:00
Step 1. Remove parentheses.
(9x2 - 6x + 2) + ( 7x2 - 5x + 3)
= 9x2 - 6x + 2 - 7x2 - 5x + 3
Step 2. Rearrange the terms so that like terms are together. (You may do this step mentally.)
= 9x2 - 7x2 - 6x - 5x + 2 + 3
Step 3. Systematically combine matching like terms and indicate addition or subtraction of unlike terms.
= 2x2 −11 x + 5
Step 4. Review the main results.
(9x2 - 6x + 2) + (-7x2 - 5x + 3)
= 9x2 - 6x + 2 - 7x2 - 5x + 3
= 9x2 - 7x2 - 6x - 5x + 2 + 3
= 2x2 - 11x + 5
b. (4x3 + 3x2 - x + 8) + (8x3 + 2x - 10)
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