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33 votes
33 votes
X²+2x-15=0

Solving quadratic equations using factorising







User Sam Gomena
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1 Answer

19 votes
19 votes
Answer: (x+5)(x-3)

Step-by-step explanation:

Write 2x as a difference so (that also =15) so 5x-3x

That end up being x^2+5x-3x-15 now putting into factorisation (x+5)(x-3)

Hope this helps:)
User Ankitkumar Makwana
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2.6k points