A1 WU BM24-3

Solve by taking the square root:

x² = 49

• -7

• 7

• 49

• ±7

x² -4 = 77

• 9

• -9

• No Real Solutions

• ±9

Solve by taking square roots:
k² - 6 = 43

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

• x = -10, 0

• x = 10, 0

• x = -10, 10

• x = 7, 12

• x = -7, 7

• x = 1, -13