Question

At how many points the given cubic polynomial (x+1)(x+3)x intersects with y-axis?
a)3 b)2 c)1 d)0

Answer 1

3 it can intersect more than 2

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

At how many points the given cubic polynomial (x+1)(x+3)x intersects with y-axis?

a) 3

b) 2

c) 1

d) 0

EVALUATION

Let p(x) be the given polynomial

Then p(x) = (x+1)(x+3)x

Now the polynomial intersects with y-axis

So we have x = 0

Putting x = 0 we get p(x) = 0

So the polynomial intersects with Y-axis at the origin (0,0)

So the required number of points is 1

FINAL ANSWER

Hence the correct option is c) 1

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