(X+1/2)^2 , (A/B+3)^2

(x+1/2)^2

(a/b+3)^2

1.

(x +  \frac{1}{2} ) {}^{2}  \\  {x}^{2}  +  \frac{1}{2} x +  \frac{1}{2} x +  \frac{1}{4}  \\  {x}^{2}  + x +  \frac{1}{4}

2.

( \frac{a}{b}  + 3) { }^{2}  \\ ( \frac{a + 3b}{b} ) {}^{2}  \\  \frac{(a + 3b) {}^{2} }{ {b}^{2} }  \\ \frac{a {}^{2} + 6ab + 9 {b}^{2}  }{ {b}^{2} }


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