1/9y²+2/3y+1

1/9y²+2/3y+1
=（1/3y+1）²

(a^2-9y^2)-(a+3y)

(a^2-9y^2)-(a+3y)
=(a-3y)(a+3y)-(a+3y)
=(a-3y-1)(a+3y)

X ^ 2-9y-4 + 5 simplification

x^2-9y+1

Solution of (3x-1) (x + 2) = 11x-4 equation

This is a quadratic equation of two variables, specifically: the square of 3x + 6x-x-2 = 11x-4, the square of 3x - 6x = - 2, the square of 3x - 2 = two thirds of the square of X - 2x + 1 = two thirds of the square of X + 1 (x-1)

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