x²-4x-5=0
The given equation is quadratic
So we can perform prime factorisation of it.
factors of -5, that add up to give -4 are -5 and 1
therefore replacing -4x by -5x+x
x²-5x+x-5=0
performing factoring by grouping,
(x²-5x)+(x-5)=0
x(x-5)+(x-5)=0
(x+1)(x-5)=0
x+1=0 and x-5=0
Answer is x=-1 and x=5
I'll do one, you can use it as a basis for your answer.

Subtract 6 from both sides to get X by itself.

Now we divide by 7 for both sides as well.

Now we find the square root of 1 to figure out X.

Therefore, X=1.
my first answer in about a month. hope this helped.
6000 - 3672 = 2328
Just use a calculator my friend :)