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Použitie vzorcov na výrazy
Použi príslušný vzorec na výrazy \( (2 x+5 y)^{2} \) a \( 9 z^{2}+30 z+25 \).
\( \begin{array}{l}(2 x+5 y)^{2}=4 x^{2}+20 x y+25 y^{2} \\ 9 z^{2}+30 z+25=(3 z+6)^{2}\end{array} \)
\( \begin{array}{l}(2 x+5 y)^{2}=4 x^{2}+20 x y+25 y^{2} \\ 9 z^{2}+30 z+25=(3 z+5)^{2}\end{array} \)
\( \begin{array}{l}(2 x+5 y)^{2}=4 x^{2}+20 x y+25 y^{2} \\ 9 z^{2}+30 z+25=(3 z-5)^{2}\end{array} \)
\( \begin{array}{l}(2 x+5 y)^{2}=4 x^{2}+20 x y+25 y^{2} \\ 9 z^{2}+30 z+25=(3 z+4)^{2}\end{array} \)