Roots using Use when b = 0 These problems are usually 16x2 25 = 0 – square root Put the variable on a difference of 2 squares. 16x2 = 25 one side of the 16 16 equation and the (Remember YOU CANNOT x2 = constant on the find a negative square 16 other. Find the root!) x = square root to solve. Roots by Make a by Plug in your chosen values graphing choosing points on of x into the equation to both sides of the find y. a.o.s. (axis of symmetry). Roots using the Use the formula quadratic especially when the formula Riley method is too Remember YOU CANNOT difficult. find a negative square root! or or or The solutions or roots, vertex, and/or axis of symmetry from a drawing?
Roots using square root Use when b = 0 Put the variable on one side of the equation and the constant on the other. Find the square root to solve. These problems are usually a difference of 2 squares. (Remember YOU CANNOT find a negative square root!) 16x2 – 25 = 0 16x2 = 25 16 16 x2 = 16 x = Roots by graphing Make a by choosing points on both sides of the a.o.s. (axis of symmetry). Plug in your chosen values of x into the equation to find y. Roots using the quadratic formula Use the formula especially when the Riley method is too difficult. Remember YOU CANNOT find a negative square root! or or or The solutions or roots, vertex, and/or axis of symmetry from a drawing?