Solve Quadratics by Square Roots CW

Solve:

x² - 9 = 0

• {3}

• {9}

• {-3, 3}

• no solution

Tags

CCSS.8.EE.A.2

Solve:

10 = x² - 6

• no solution

• {-2, 2}

• {4}

• {-4, 4}

Tags

CCSS.8.EE.A.2

Solve:

x² + 64 = 0

• no solution

• {-8, 8}

• all real numbers

• {8}

Tags

CCSS.8.EE.A.2

Solve:

(x + 7)² = 36

• {-6, 6}

• {-1, -13}

• {-43, 43}

• {-29, 29}

Tags

CCSS.HSA-REI.B.4B

Solve:

(x - 2)² = 100

• {12, -8}

• {-10, 10}

• {-102, 102}

• {-98, 98}

Tags

CCSS.8.EE.A.2

Solve for m.
4m² + 10 = 38

• m = 7, -7
• m = 7
• m = √7
• m = √7, -√7

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solutionb

Tags

CCSS.HSA-REI.B.4B

2x²=100

• x = ±25

• x = ±√50

• x = ±√100

• x = ±√5

Tags

CCSS.8.EE.A.2

x² -4 = 77

• 9

• -9

• No Real Solutions

• ±9

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
a² + 9 = 9

• no solution
• a = 0
• a = 3 or -3
• a = 18

Tags

CCSS.HSA-REI.B.4B