Question
Given that (3a + 7b = 54) and (ab = 24), determine the
value of (9a2 + 49b2).Solution
Given, (3a + 7b) = 54
Squaring both sides, we get;
9a2Â + 49b2Â + 2 X 21ab = 2916
Or, 9a2Â + 49b2Â = 2916 - 42 X 24
Or, 9a2Â + 49b2Â = 1908
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