Question

The value of a and b, if the zeros of x²+(a+5)x-(b-4) are -5 and 9 will be ​

Answer 1

Answer:

a = -1

b = -41

Step-by-step explanation:

by finding sum of zeroes and product of zeroes we find out the value of a and b .

may be it helps u

Answer 2

Answer:

(a,b) = (-9,49)

Step-by-step explanation:

Value of (x = -5) in given equation should give zero, so,

(-5)^2 + (a + 5)(-5) - (b - 4) = 0

25 - 5a - 25 - b + 4 = 0

5a + b = 4 .... (1)

Similarly,

For (x = 9)

(9)^2 + (a + 5)(9) - (b - 4) = 0

81 + 9a + 45 - b + 4 = 0

9a - b = -130 .... (2)

(1) + (2)

14a = -126

a = -9

Therefore,

b = 49