15 is negative:(C) x = 0, x = 513. The value of x when the value of 8r

1.	15 is negative:(C) x = 0, x = 513. The value of x when the value of 8r x(A) x < 3, x25(B) x > 3, x < 5(D) x = 3, x = 5
Answer» 8x - x² - 15 First we find zeroes -x² + 8x - 15 = 0 -x² + 3x + 5x - 15 = 0 -x ( x - 3) + 5 ( x - 3) = 0 (5 - x) ( x - 3) = 0 So, x = 3 and 5 Therefore, when x ---------------------------------------- - \| + \| - 3 5 So, 8x - x² - 15 is negitive when x < 3 and x > 5 A) option

15 is negative:(C) x = 0, x = 513. The value of x when the value of 8r x(A) x < 3, x25(B) x > 3, x < 5(D) x = 3, x = 5

Answer»

8x - x² - 15

First we find zeroes

-x² + 8x - 15 = 0

-x² + 3x + 5x - 15 = 0

-x ( x - 3) + 5 ( x - 3) = 0

(5 - x) ( x - 3) = 0

So, x = 3 and 5

Therefore, when x

---------------------------------------- - | + | - 3 5

So, 8x - x² - 15 is negitive when x < 3 and x > 5

A) option