5.5 Quadratic Equations

Warm-up

Factor fully. 369 2 x

Solving by Factoring

1a) Solve. 15112 2 xx

Solving by Factoring

1b) Solve. 0862 xx

Solving by Factoring

1c) Solve. 12163 2 xx

Solving by Factoring

1d) Solve. xx 816 2

Solving by Factoring

1e) Solve. 462 2 xx

Solving by Finding Square Roots

2a) Solve. 01805 2 x

Solving by Finding Square Roots

2b) Solve. 0254 2 x

Solving by Finding Square Roots

3) The function models the height y in feet of a heavy object x seconds after it is dropped from the top of a building that is 270 feet tall. How long does it take the object to hit the ground?

27016 2 xy

270ft

y = 0

Solve by graphing

0352 xx

Solve by graphing

15196 2 xx