What's the Answer of 5+5=09

Hurry which expression is equivalent to 3√x^5y?

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

Which ordered pair identifies a point in quadrant iv? a) (2, 5) b) (0, 1) c) (-1, -1) d) (12, -5) which quadrant is (-4,-6) in? a) i. b) ii. c) iii. d) iv.