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OpenStudy (anonymous):
In the function f(x) = 4(x^2 − 6x + ____) + 20, what number belongs in the blank to complete the square? (Answer please)
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OpenStudy (antonio_xx2):
So to complete the square you take half the coefficient of the 'x' which is 6...so 3...then square it....so 9....and add it to both sides... So this is 9.
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