Question

13. If one of the roots of the equation x? - px - 144 = 0 is 16, then find value of other root and p respectively.
(a) -9,7
(b) 9, -7
(c)-9, -7
(d) 9,7.​

Answer 1

Answer:

Step-by-step explanation:

p = ±12

Step-by-step explanation:

For equal roots, D = 0

As we know, D = b² - 4ac

Quadratic equation: x² + px + 36 = 0

From the given quadratic equation,

a = 1

b = p

c = 36

So, b² - 4ac = 0

(p)² - 4 (1) (36) = 0

p² = 144

p = ±12

or, p = -12, +12