Question

4. A quadratic polynomial, whose zeroes are -3 and 4, is (a) x²- x + 12 (b) x² + x + 12 (c) (d) 2x² + 2x – 24

Answer 1

Answer:

Step-by-step explanations. The two zeroes are -3 and 4

Let the quadratic polynomial be

ax²+ bx + c and its zeroes be A and B.

Then,A + B = -3+4

= 1 = -b/a

AB = 4(-3)

= -12 = c/a

So this gives that a = 1

b = 1 and c = -12

This forms an equation that is x²+ x- 12

So the right option is (d)