H(x)=x^4-11x^2+18 help

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square