Thedetermines the scale of the scale of the coordinate plans.

Find the vertex of the function given below y=x^2-6x+1

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]