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Example: Expand (Ö3 - Ö2)2. Solution: The above problem in the form of (a - b)2 = a2 - 2ab + b2. Here a = Ö3 and b = Ö2, substitute these values in the above formula, we get, (Ö3 - Ö2)2 = (Ö3)2 - 2 Ö3 * Ö2 + (Ö2)2 = 3 - 2Ö6 + 2 = 5 - 2Ö6. Directions: Solve the following problems. Also write at least ten examples of your own. |