If a-2- b-2- find the value of-i a2-b2 ii a2-a b-b2 iii a2-b2

(i) a2 + b2 = (2)2 + ( minus;2)2 = 4 + 4 = 8 (ii) a2 + ab + b2 = (2 times; 2) + 2 times; ( minus;2) + ( minus;2) times; ( minus;2) ...

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Properties of Integers under Multiplication

If a=2, b=-2,...

Question

If a = 2, b = − 2, find the value of:

(i) a²+ b² (ii) a² + ab + b² (iii) a² − b²

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Solution

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