Which of these is a simplified form of the equation 6y + 4 = 8 + 2y + 2y?

Combine like terms to make a simpler expression 3z+z

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0