1. Chapter 5 Lesson 3 Solving Quadratic Equations by Finding Square Roots

2. VOCAB Square Root – is a number that produces a specified quantity when multiplied by itself Radical Sign – is the symbol for a square root Radicand – is the number beneath the radical sign Radical – is the whole expression Rationalizing the Denominator – is when you multiply the numerator and denominator by the denominator when there’s a radical in the denominator, this will eliminate the radical sign

3. DIRECTIONS (Simplifying) Combine Like Terms Distribute the Radical (ONLY for Fractions) Find a perfect square 4,9,16,25,36,49,64,81,100… Rewrite the radical as a multiplication problem Reduce your perfect Square

4. I DO (Simplifying) Simplify the expression 1. 2. 3. 4. 5.

5. WE DO (Simplifying) Simplify the expression 1. 2. 3. 4. 5.

6. YOU DO (Simplifying) Simplify the expression 1. 2. 3. 4. 5.

7. DIRECTIONS (Solving Equations) Solve for x Use Inverse Operations To get x by itself Simplify

8. I DO (Solving Equations) Solve 1. 2. 3. 4. 5.

9. WE DO (Solving Equations) Solve 1. 2. 3. 4. 5.

10. YOU DO (Solving Equations) Solve 1. 2. 3. 4. 5.

11. REVIEW Today we learned how to solve quadratic equations by finding square roots.

12. HOMEWORK Worksheet

13. ALGEBRA # Chapter 5 Lesson 4 Complex Numbers

14. VOCAB Imaginary Unit – is the square root of a negative number Standard Form is a + bi A and b are real numbers If a=0 and b doesn’t then it’s a PURE IMAGINARY NUMBER Complex Plane – a plane that holds complex numbers

15. DIRECTIONS (Plotting Points) Walk before you jump Walk the real number Jump the imaginary

16. I DO (Plotting Points) Plot the Points 1. 2 - 3i 2. -3 + 2i 3. 4i 4. 5 - i

17. WE DO (Plotting Points) Plot the Points 1. 4 - i 2. 3 + 2i 3. -3i 4. -4

18. YOU DO (Plotting Points) Plot the Points 1. 4 + 2i 2. -2 - i 3. -1 + i 4. 1 + 5i