For what value of p and q is y^4+py^3+qy^2+12y+9 a perfect square ?
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Answer. Given :- For what value of p and q is y^4 + py^3 + qy^2 + 12y + 9 a perfect square ? we know that, (a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca.
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