Question

x+4²=x+3²+2x² teorema de pitagoras

Answer 1

x+4^2=x+3^2+2x^2
x+16=x+9+2x^2
-2x^2=-7
2x^2=7
x^2=7/2
x=raiz de 7/2
x=1,3

espero ter ajudado