Binomials

To binomial
36x2−168x36x2-168x
add a number to the resulting trinomial be square of binomial.

Result

x =  196

Solution:

x=(−168)24⋅36=196 36x2−168x+196=(6x−14)2x = \dfrac{ (-168)^2 } { 4\cdot 36} = 196 \ \\ 36x^2-168x + 196 = (6x -14)^2

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