Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used.
match each expression to its equivalent standard form.
x² + 22+2
x² - 4x+8
x²+4
x² +x+2
x2 + 16
x² - 4x - 4
(x + 21)(x - 21)
(x - 2 + 21)(x - 2 - 21)
| (x+1 + 1)(x+1 -1