Intermediate Algebra

Quadratics

From area tiles to parabolas: multiply and factor quadratic expressions, read their graphs, and solve them by factoring, completing the square and the formula.

17 levels 97 lessons GR 9 Taught by Viète 0 of 97 complete

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THE SYLLABUS

Multiplying Expressions

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Multiplying Expressions

Multiply a term by a sum with an area model: the deep beds hold the letter part, the strips hold the number part.

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Multiplying Binomials

Multiply two binomials with an area model: every part of one binomial meets every part of the other, four products in all.

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Finding the Units

Find the constant term of a product of two binomials: the one-by-one corner holds the two numbers multiplied together.

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Finding Linear Terms

Find the linear terms of a product of two binomials: each comes from a letter on one side times the number on the other.

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Level Check

Fifteen questions from Level 1: multiply binomials with and without the area model, then five look-back questions on evaluating and solving.

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Distributing and Combining

🔒 5 lessons

III

Factoring Expressions

🔒 5 lessons

Expressions with Signed Numbers

🔒 6 lessons

Factoring with Signed Numbers

🔒 5 lessons

Graphing Factored Form

🔒 6 lessons

VII

Solving by Factoring

🔒 6 lessons

VIII

Applications of Quadratics

🔒 4 lessons

Graphing Vertex Form

🔒 10 lessons

Solving by Undoing

🔒 5 lessons

Complex Solutions

🔒 5 lessons

Motion

🔒 6 lessons

Completing the Square

🔒 6 lessons

Graphing by Completing the Square

🔒 6 lessons

The Quadratic Formula

🔒 7 lessons

Symmetry

🔒 6 lessons

Applying the Quadratic Formula

🔒 4 lessons