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Q:Expand and simplify:
(2w + 3x)(w – 5x) – (3w + 7x)(w – 7x)​

User Jcaruso
by
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1 Answer

2 votes

Answer:

- w² + 7wx + 34x²

Explanation:

Given

(2w + 3x)(w - 5x) - (3w + 7x)(w - 7x) ← expand factors using FOIL

= 2w² - 10wx + 3wx - 15x² - (3w² - 21wx + 7wx - 49x²) ← distribute by - 1

= 2w² - 7wx - 15x² - 3w² + 21wx - 7wx + 49x² ← collect like terms

= - w² + 7wx + 34x²

User Ingram
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