Question

4. The quadratic polynomial whose zeroes are and is 3/5 and -1/2 is
a) 10x square -x+3
b) 10x square +x-3
c) 10x square -x-3
d) 10x square +x+3​

Answer 1

Answer:

The quadratic polynomial whose zeroes are 3/5 and -1/2 is (c) 10x square -x -3

Step-by-step explanation:

Let a= 3/5 and b= -1/2  are two zeroes.

Therefore their corresponding quadrating equation is

                     x² - (a + b)x + ab = 0

                 ⇒ x² - (3/5 - 1/2)x - 3/10 =0

                 ⇒ x² -1/10 x - 3/10 = 0

                 ⇒ 10x² - x - 3 =0

Therefore the required polynomial is 10x² - x - 3