Factories the following by using splitting the middle terms 1) x² + 5x - 3
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delta=b²-4ac
=5²-4 * 1 * 3
= 25 - 12
=13
delta<0
hence the roots are real and equal
x= -b±√delta
x= -5 ± √13
x= -5 +√13
OR
x= -5-√13
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