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**Unformatted text preview: **Algebra Review 1. Difference of squares: 2 2 ( )( ) a b a b a b- = + - 2. Squared binomials: 2 2 2 2 2 2 ( ) 2 ( ) 2 a b a ab b a b a ab b + = + +- =- + 3. Quadratic equation in standard form and the quadratic formula 2 2 4 2 b b ac ax bx c x a- - + + = = 4. Solving quadratic equations using three methods: a. Sight factoring b. Completing the square (the same method used to “prove” the quadratic formula) c. Quadratic formula 5. Two "standard" triangles (45°-45°-90° and 30°-60°-90°) 6. The Pythagorean Theorem for right triangles, 2 2 2 a b c + = 7. Plotting parabolas: 2 ( ) ( ) f x a x h k = - + ‘a’ positive: concave upward (vertex is at a minimum)  ‘a’ negative: concave downward (vertex is at a maximum)  ‘h’ negative: moves vertex to the right  ‘h’ positive: moves vertex to the left  ‘k’ positive: moves vertex up  ‘k’ negative: moves vertex down 8. Straight Lines:...

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