summerbennett6 summerbennett6

22-06-2019
Mathematics

contestada

What constant term should be used to complete the square?

x 2 - 9x + _____ = 6

-81/4
81/36
-9/2
81/4

Respuesta :

NeilIceland NeilIceland

22-06-2019

x2-9x+ ___= 6

x2-9x+81/4=6

(This is because you need to do 2*x*a=-9x) Hence 2a=-9

So a=-9/2 hence a2= 81/4

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