Question

The sum and product of the zeros of a quadratic polynomial are 2 and -15 respectively. The quadratic polynomial is (a) x 2 -2x+15 (b) x2 -2x-15 (c) x2+2x-15 (d) x2+2x+15

Answer 1

Given(Consider the ax²+bx+c=0):

• -b/a=2

• c/a=-15

From the two we get:

• b=-2a
• c=-15a

Now a is one so we get b=-2 c=-15.

x²-2x-15 is choice b.

Answer 2

°Verified°

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