Please help! Thank you

Find the nonpermissible replacement for binthis expression. b2/5b +5

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

The graph shows a vertical translation of y= square root of x cubedwhat is the range of the translated function? {yly < 0}{yly > 0}{yly is a natural number}{yly is a real number}