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### Grade 8 - Mathematics7.44 Problems - VIII

 Example: If a-b = 3 and ab = 10, find the value of a3-b3. Solution: Given that, a-b = 3 Cubing on both sides, we get (a-b)3 = 33 a3-b3-3ab(a-b) = 27 a3-b3-3.10.3 = 27 a3-b3-90 = 27 a3-b3 = 27 + 90 a3-b3 = 117 Directions: Solve the following problems. Also write at least ten examples of your own.
 Q 1: If a-b = 8 and ab = 48, find the value of a3-b3.1662166816661664 Q 2: If a-b = 6 and ab = 91, find the value of a3-b3.1852185618581854 Question 3: This question is available to subscribers only! Question 4: This question is available to subscribers only!

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