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Question

Graph of y=x2+7x+3 intersects the x-axis at __ number of points

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Solution

y=x2+7x+3

a = 1, b = 7, c = 3

D=b24ac=494(1)(3)

= 49 - 12 = 37 > 0

As D > 0, the roots will be real & distinct

So, graph of given expression touches the x-axis at 2 points.


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