Solving Quadratics

Solve
a² + 2a - 24 = 0

• a = -6, 4
• a = 6, -4
• a = 12, -2
• a = 8, -3

Solve
2x² + 17x + 21 = 0

• x= ^-21/₂, -17
• x= ²/₃, 16
• x=-7, ^-3/₂
• x=15, -³/₇

Solve by taking square roots:
k² - 6 = 43

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

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

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

solve:  
4x²+16x+15=0

• -5/2,-3/2
• (2x+5)(2x+3)
• -10,-6
• 5/2, 3/2

Use the quadratic formula to find the solutions for y = 3x² + 8x - 1

• 0.1167 and -2.7833
• .7 and -16.7
• .35 and -8.35
• 0.2358 and -1.236

Use the quadratic formula to find the solutions for
y = -x² - 5x + 12

• -4.9 and -0.1
• -8.54 and 8.54
• -0.45 and 3.55
• -6.77 and 1.77

• x = -2

• x = 2

• no real solution

• x = -2 and 2

• x = 7 and -2

• x = 7 and 2

• x = -7 and -2

• x = -7 and 2

• x = 1 and -3

• x = -1 and -3

• x = -1 and 3

• x = 1 and 3