3x+y = 18 x= -2y + 1 Solve by substitution

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Simplify the algebraic expression 8y-2(y+4)