Question

if one zero of the quadratic polynomial 4 x square - 8 x minus 9 is negative of the Other find the value of k​

Answer 1

not shure about the answer

Answer 2

Answer:

Step-by-step explanation:

Let r1 and r2 be the zeroes of the polynomial

r2 = -r1 (Given)

P(x) = 4x^2 - 8kx - 9

Sum of zeroes = -(co efficient of x) / (co efficient of x^2)

Therefore,

r1 + r2 = -(-8k) / 4

r1 + (-r1) = 8k / 4

r1 - r1 = 2k

0 = 2k

0 / 2 = k

0 = k

Therefore, k = 0

Hope it helps