Select all of the values that are solutions of x2 + 20 = 12x.

2 and 10 are solutions of given expression  

Step-by-step explanation:

Given  expression    

We have to find the values that are solutions of given expression.

Since, the given expression is a quadratic equation , thus the roots are the  solutions of given expression.

Consider the given expression ,

It can be written as ,

We can solve the given quadratic equation using middle term splitting method,

-12x can be written as -2x - 10x

taking x common from first two terms and -10 common from last two terms, we have,

using zero product property, we have,

or

or

Thus, 2 and 10 are solutions of given expression  

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

step-by-step explanation: