Tozo_Igualdades+notables+1

[[image:http://adedi4mat.wikispaces.com/space/math/c922027ef7a13a5db8ffc5ed768f19dc.gif align="absmiddle" caption="\[\begin{array}{l}(3 - x)^2 =9 - 2 \cdot 3 \cdot x + x^2= 9 - 6x + x^2 \\(5 + x)^2 =25 + 2 \cdot 5 \cdot x + x^2= 25 + 10x + x^2 \\(x - 3)^2 =x^2 - 2 \cdot x \cdot 3 + 9= x^2 - 6x + 9 \\(6x + 2)^2 =36x^2 + 2 \cdot 6x \cdot 2 + 4= 36x + 24x + 4 \\(7x - 1)^2 =49x^2 - 2 \cdot 7x \cdot 1 + 1= 49x^2 - 14x + 1 \\\end{array}\]"]]