Solving Quadratics with Square Roots Basic

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64

Solve for x     x² - 4 = 76

• x = 4 , -4

• x = 4√5    ,  -4√5

• x = 80   ,  x = -80

• x = 5√4    or    -5√4

Pick which equation I can use square roots to solve:

• 3x² + 2x + 1 = 0

• 3x² -27 = 0

• 3x² + 2x = 1

• 4x + 10 = 0

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

Solve using square roots.

• ± 1/4

• ± 9/36

• ± 1/2

• No real solution

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

• bx

• square roots

• cx

• discriminant

• quadratic formula

• Isolate the

• Take the square root of both sides.

• Eliminate the

• bx

• square roots

• cx

• discriminant

• quadratic formula

• Isolate the

• Take the square root of both sides.

• Eliminate the

• {6.78,-6.78}

• {8,-8}

• {7,-7}

• No Solution

• {12.88,-12.88}

• {13.22,-13.22}

• {16}

• No Solution