[tex]x^2+25=225 \\ x^2=200 \\ \sqrt{x^2}= \sqrt{200} \\ x=14.14 \\ or \\ x=10 \sqrt{2} [/tex] If [tex] c^{2} \ \textless \ a^2+b^2[/tex] the triangle would be acute If [tex]c^2=a^2+b^2[/tex] the triangle would be right If [tex]c^2\ \textgreater \ a^2+b^2[/tex] the triangle would be obtuse Hope this helps!
