Asked by Ola
Complete the square. Write the resulting perfect square trinomial as the square of a binomial. X2+9x
Answers
Answered by
Reiny
x^2 + 9x
= x^2 + 9x + 81/4 - 81/4 , take 1/2 of the coefficient of the x term, square it, then add and subtract it
= (x + 9/2)^2 - 81/4
= x^2 + 9x + 81/4 - 81/4 , take 1/2 of the coefficient of the x term, square it, then add and subtract it
= (x + 9/2)^2 - 81/4
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