Rewrite the function by completing the square.
f(x) = x^2 - 14x +63

Step-by-step explanation:

The complete square of this would be , since then that would be just . Therefore, you can rewrite the function like this:

Hope this helps!

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

the solution is 12x-6y