Answer:

Step-by-step explanation:
Recall that the quadratic formula gives you the pattern to follow in order to find the solutions to a quadratic equation of the form: 
It tells us that we need to use the parameters
and
in the following formula in order to get the answers for the x-values that solve it:

so, in our case,
,
, and 
then, replacing these values in the formula, we obtain:

Which looks like the third expression you are listing (although it is a little hard to read)
I think 10 is the answer, correct me
Answer:
hiiiiiiiiiiiiiiiiiiiiiiii
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
3(x-10)=-6
3x-30=-6
3x=24
x=8
Answer:
21x+53
Step-by-step explanation: