Solving Quadratics Using Square Roots

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.8.EE.A.2

Solve.

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5m² + 1 = 6

• m = 0
• m = 1 or -1
• m = √7
• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B

Solve for x: 
(x+6)²=49

• x=7,12
• x=±7
• x=1,-13
• x=43,-55

Tags

CCSS.8.EE.A.2

3. Solve the equation

4x² - 25 = 0

• 5/2, -5/2

• 5/2, 5/2

• 25/4, -25/4

• -5/2, 5/2

Tags

CCSS.HSA-REI.B.4B

Solve for x: 
(x+6)²=49

• x=7,12
• x=±7
• x=1,-13
• x=43,-55

Tags

CCSS.8.EE.A.2

12. Solve by factoring

(x - 2 )² = 49

• -5, -9

• ^{7, -7}

• 9, -5

• ^{9, -9}

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
k² - 6 = 43

• k = √37
• k = 37 or - 37
• k = 7, k = -7
• no solution

Tags

CCSS.HSA-REI.B.4B

4(x+9)²=24

• {-9+√6,-9-√6}
• {3,-3}
• {3}
• so solution

Tags

CCSS.8.EE.A.2

5(x-8)²=15

• {√3,-√3}
• {8+√3,8-√3}
• {2√2,-2√2}
• no solution

Tags

CCSS.8.EE.A.2