Shows that, x^2-4x-1=0

Step-by-step explanation:

1. Use the quadratic formula

Once in standard form, identify a, b and c from the original equation and plug them into the quadratic formula.

2. Simplify

1. Evaluate the exponent

2. Multiply the numbers

3. Add the numbers

4. Factorisation

5. Factorisation

6. Evaluate the square root

7. Evaluate the square root

8. Multiply the numbers

3. Separate the equations

To solve for the unknown variable, separate into two equations: one with a plus and the other with a minus.

4. Solve

Rearrange and isolate the variable to find each solution

Solution

answer:

c) the x-coordinate of the center of the circle increases by 3

19479 is the answer ^^