How to factorise 5x square -20?
1 answer:
Answer:
5(x² - 4)
Step-by-step 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
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Step-by-step explanation:
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The answer i got is the last one :)))))