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Find the value of k that would make the left side of the equation a perfect square trinomial. Show your work. 9x^2-kx+4=0

Find the value of k that would make the left side of the equation a perfect square trinomial. Show your work. 9x^2-kx+4=0
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Find the value of k that would make the left side of the equation a perfect square trinomial. Show your work. 9x^2-kx+4=0

User Joseph Wambura
by
8.6k points

1 Answer

6 votes
k = 72.

A perfect-square trinomial is of the form
a^2x^2 +/- 2axb + b^2. 2axb = 72.
User Spinkoo
by
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