# Chapter P, Prerequisites - Section P.5 - Algebraic Expressions - P.5 Exercises: 47

9y$^2$-6y+1

#### Work Step by Step

(A+B)$^2$=A$^2$+2AB+B$^2$ (3y-1)$^2$ (3y)$^2$+2(3y)(-1)+(-1)$^2$ 9y$^2$-6y+1

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