Factorise the sum 2x²-x-15
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Answer:
2x^2 - x - 15
= 2x^2 - 6x + 5x - 15
= 2x ( x - 3 ) + 5 ( x - 3 )
= ( 2x + 5 ) (x - 3 )
zeros of polynomial are
- 2x + 5 = 0
x = -5/2
- x - 3 = 0
x = 3
hope it helps
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