Simple Quadratics

Solve
 x² - 10 = 26

• x = -6, 6
• x = -4, 4
• x = 4, 6
• No solution

Solve.
4m² - 100 = 0

• m = 25, -25
• m = 96
• m = 5, -5
• m = -96

Solve.
n² - 5 = -4

• n = ±√9
• n = ±3
• n = ±1
• No real solution

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve using square roots.
5b² - 4 = 41

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

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

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

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

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