Find the value of a and of b for which
(a) the solution of x2 + ax < b is
-2<x < 4

Step-by-step explanation:

Given :

re - writing the equation , we have

we need to find the value of a and b for which -2<x < 4 , this means that the roots of the quadratic equation are -2<x < 4.

The formula for finding the quadratic equation when the roots are known is :

- sum of roots(x) + product of root = 0

sum of roots = -2 + 4 = 2

product of roots = -2 x 4 = -8

substituting into the formula , we have:

, which could be written in inequality form as

comparing with , it means that :

x + 4/7

step-by-step explanation:

use cymath

$30.32

step-by-step explanation:

65.00*.12=2.80

65.00-2.80=57.20

57.20*1.06=60.632

60.632/2=30.316