Answer:
x = - 1
Step-by-step explanation:
Given
4x = x^2 - 5 Transfer 4x to the right side.
Solution
x^2 - 4x - 5 = 0 Factor
(x - 5)(x + 1)
You want the negative solution. That means that the middle sign must be plus.
x + 1 = 0 Subtract 10 from both sides
x = - 1 Ten on the left disappears by the subtraction process.
Is that correct?
4x = x^2 - 5
x = - 10
4*(-1) = (-1)^2 - 5
-4 = ? 1 - 5
-4 = - 4
and it does work.
Answer:
81m + 27t
Step-by-step explanation:
A/b=c
times both sides by b
A=bc
divide both sides by c
A/c=b
b=A/c
Answer:
5 units to the right.
Step-by-step explanation:
The x in f(x) is replaced by x - 5 to give g(x).
The - 5 will shift f(x) 5 units to the right.
