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Factor and find the roots of y= 4×^2+4×-15

Factor and find the roots of y= 4×^2+4×-15-example-1

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factor
=(2x - 3)(2x + 5)

roots (zero)
2x - 3 = 0
2x = 3
x = 3/2
x = 1.5

2x + 5 = 0
2x = -5
x = -5/2
x = -2.5
User Serhii Baraniuk
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