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How to factorise 5x square -20?

How to factorise 5x square -20?
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How to factorise 5x square -20?

User Ifozest
by
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1 Answer

4 votes

Answer:

5(x² - 4)

Explanation:

5x² - 20

5 can divide both 5 and 20, 5x²/5 and -20/5 = x² and -4

5(x² - 4), to know if you are correct, multiply 5 by the bracket and you get the question back

User Southern Hospitality
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