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Question
3a2x2 + 8abx + 4b2 = 0
Solution
3a2x2 + 8abx + 4b2 = 0
⇒ 3a2x2 + 6abx + 2abx + 4b2 = 0
⇒ 3ax(ax + 2b) + 2b(ax + 2b) = 0
⇒ (3ax + 2b) (ax + 2b) = 0
⇒ x = `-(2b)/(3a) or - (2b)/a`.
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