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Question
Find the value of 'a': 9x2 + (7a - 5)x + 25 = (3x + 5)2
Sum
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Solution
9x2 + (7a - 5)x + 25 = (3x + 5)2
Comparing coefficients of x terms, we get
(7a - 5)x = 30x
7a - 5 = 30
7a = 35
a = 5
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Expansion of Formula
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