Algebra 1 Formulas
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14 terms
English | Math / Symbols |
|---|---|
 Quadratic Formula | x= [-b±√(b²-4ac)] / 2a |
| Difference of Two Squares | a²-b²= (a+b)(a-b) |
| Perfect Square Trinomial | a trinomial in the form a²+2ab+b² : (a +b)² or (a-b)² |
| Permutations (Probabilty) | P(n,r) = n! / (n-r)! (order matters) |
| Combinations (Probabilty) | C(n,r) = n! / (n-r)!r! (order does not matter) |
| Standard Deviation (Probabilty) | δ = √(X₁-x)² +(x₂-x)² +(x₇-x)² / n |
| Pythagorean Theorem | a²+b²=c² |
| Law of Sines | sinA/a=sinB/b=sinC/c |
| Law of Cosines | a²=b²+c²-2bcCosA |
| Arc Length | l = (n/360) x 2Πr |
| Slope | m = y₂-y₁/ x₂-x₁ |
| Slope-Intercept Form of a Line | y = mx + b |
| Point-Slope Form of a Line | y - y₁=m (x-x₁) |
| Equation for a circle on a Coordinated Plane | (x-h)² +(y-k)² = r² |
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