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Find the value for c, that would make x^2-12x+c, a perfect square
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Find the value for c, that would make x^2-12x+c, a perfect square

User Nishchit
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Complete the square to find the value of this constant:
4x² + 12x + c = (2x + 3)²
4x² + 12x + c = 4x² + 12x + 9
By comparing coefficients, it is easy to see that c = 9.
User Sterin
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