Marian P.
asked • 11/20/19Which of the following values "completes the square," or creates a perfect square trinomial, for x2 − 8x + ___?
Denise G. answered • 11/20/19
Algebra, College Algebra, Prealgebra, Precalculus, GED, ASVAB Tutor
The formula for finding the c term to complete the square is (b/2)2
In this example, the b term is -8. So to find the c term (-8/2)2= (-4)2 = 16
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So... ax^2 + bx + c = x^2 - 8x + 16 = (x - 4)^2 ... This is a perfect square.11/20/19