Solving Quadratic Equations by Square Rooting

Solve using square root method: (x+9)² - 1 = 10

• (-6,0) (-12,0)

• (9,0) (10,0)

• (-5.68,0) (-12.32,0)

• no solution

Pick which equation I can use square roots to solve:

• 3x² + 2x + 1 = 0

• 3x² -27 = 0

• 3x² + 2x = 1

• 4x + 10 = 0

Which method should be used to solve the quadratic function? Explain. 4x² - 16 = 0

• Square Roots; there is no "bx" term.

• The Quadratic Formula; it cannot be solved using another method.

• Factoring; it is factorable using a GCF.

Solve by square rooting:

5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve the equation using square roots.
x² = 121

• 60.5

• ± 11

• ± 12

• 11

Use the square root property to solve the Quadratic Equation.
2(x - 4)² = 200

• ±10

• -14, 6

• -6, 14

• 100