F(x) = -4x2 + 5x
Find f (6)

This is different from the first one can someone me

For what values of x is x2 + 2x = 24 true?

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1