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Q.

The graph of y=2x2+9x+1

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a

touches the X-axis and lies entirely below the X-axis

b

intersects the X-axis in two distinct points

c

touches the X-axis and lies entirely above the X-axis

d

lies entirely above the X-axis.

answer is C.

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Detailed Solution

y=2x2+9x+1

a=2,Δ=b24ac =81+8

a<0,Δ>0

So, the graph intersects x-axis in two distinct points

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