Quadratic equations | Algebra I | Khan Academy (English)

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Quadratic equations | Algebra I | Khan Academy
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Lecture Description of this above Topic:

Lecture 1: Completing the square for vertex form

Lecture 2: Solving a quadratic equation by factoring

Lecture 3: Rewriting a quadratic function to find roots and vertex

Lecture 4: Solving quadratic equations by square roots

Lecture 5: Example 2: Completing the square

Lecture 6: Graphing a parabola in vertex form

Lecture 7: CA Algebra I: Completing the square

Lecture 8: Completing the square for quadratic formula

Lecture 9: Shifting and scaling parabolas

Lecture 10: Example 2: Using the quadratic formula

Lecture 11: Algebra II: Quadratics and shifts

Lecture 12: Introduction to the quadratic equation

Lecture 13: Finding the vertex of a parabola example

Lecture 14: CA Algebra I: Factoring quadratics

Lecture 15: Graphing a parabola using roots and vertex

Lecture 16: Solving a quadratic by factoring

Lecture 17: Quadratic inequality example

Lecture 18: Example 4: Applying the quadratic formula

Lecture 19: Parabola intuition example 1

Lecture 20: Multiple examples graphing parabolas using roots and vertices

Lecture 21: Example: Solving simple quadratic

Lecture 22: Finding dimensions of triangle from area

Lecture 23: Example 3: Completing the square

Lecture 24: Graphing a parabola by finding the roots and vertex

Lecture 25: Example 1: Completing the square

Lecture 26: Examples: Graphing and interpreting quadratics

Lecture 27: Example 3: Using the quadratic formula

Lecture 28: Quadratic inequality example 2

Lecture 29: Example 5: Using the quadratic formula

Lecture 30: Solving quadratic equations by completing the square

Lecture 31: Parabola vertex and axis of symmetry

Lecture 32: More examples of factoring quadratics with a leading coefficient of 1

Lecture 33: Modeling mosquitos with quadratics

Lecture 34: How to use the quadratic formula

Lecture 35: Example 1: Using the quadratic formula

Lecture 36: Determining mistakes in steps example

Lecture 37: Quadratic formula (proof)

Lecture 38: Order of steps exercise example

Lecture 39: Graphing a parabola with a table of values

Lecture 40: Proof of quadratic formula

Lecture 41: CA Algebra I: Quadratic equation

Lecture 42: Example: Quadratics in standard form

Lecture 43: Dimensions from volume of box

Lecture 44: Quadratic inequalities (visual explanation)

Lecture 45: Quadratic equation part 2