SOLUTION: solve using the quadratic formula: 9x(sqaured) + 8=44 solve using the quadratic formula: 3x(squared)- 5x-4 = 0 Solve for z: z(squared)-8z=9 Solve the square root of: x-1=-3

Question 350672: solve using the quadratic formula: 9x(sqaured) + 8=44
solve using the quadratic formula: 3x(squared)- 5x-4 = 0
Solve for z: z(squared)-8z=9
Solve the square root of: x-1=-3
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Hi,
.

(x + 2)(x-2)= 0
x = 2 or x= -2
.

(z-9)(z+1)
z = 9 or z = -1
.

(x-1) = 9
x = 10
.
3x^2 -5x -4 =0
Use quadratic formula

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=73 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 2.25733395755292, -0.590667290886255. Here's your graph:

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