Solve Quadratic Equations (show all work)

(9) The solution is x = 1 and x = 5

(10) The solution is x = 12 and x = -8

Explanation:

(9) The given expression is

We need to determine the solution of the equation.

The term can be expanded using the formula,

Thus, we have,

Solving the quadratic equation, we get,

The solution of the quadratic equation are x = 5 and x = 1

(10) The given expression is

We need to determine the solution of the equation.

Let us solve the equation using the quadratic formula,

where

Thus, we have,

Simplifying the terms, we have,

Thus, the roots are

 and  

 and  

 and  

Thus, the solution is x = 12 and x = -8

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

where is the picture

step-by-step explanation: