The word solve

At this level solve can only apply for

• linear ie 1 unknown and the highest power of unknown is 1
• quadratic ie 1 unknown and the highest power of unknown is 2
• cubic ie 1 unknown and the highest power of unknown is 3

Solving linear is one side of = is unknown and other is the known
Solving quadratic

1. Must be = 0
2. Replace the appliance with a ( )
3. Use quadratic formula using the calculator

1.   Solve the equation 2x² + 13x + 6 = 0

2.   Solve the equation 3x² – 10x = 25 

3.   Solve the equation x² – 7x + 12 = 0

4.   Solve the equation x² + 13x + 42 = 0

5.   Solve the equation 6x² + x  - 35 = 0

6. Solve the equation 2cos²x – 3 cos x –2 = 0

1.      Solve 3x² – 10x + 3 = 0

2.      Solve 3(2ⁿ)² – 10(2ⁿ) + 3 = 0

3.      Solve 3(2²ⁿ) – 10(2ⁿ) + 3 = 0

4.      Solve 3(4ⁿ) – 10(2ⁿ) + 3 = 0

5.      Solve 3(tan x)² – 10(tan x) + 3 = 0