Question

x^2 + (x+5)^2=125 find the root (zeros) of the quadratic polynomial​

Answer 1

x^2+(x+5)^2=125

x^2+x^2+25+10x=125

2x^2+10x-100=0

x^2+5x-50=0

x^2+10x-5x-50=0

x(x+10)-5(x+10)=0

(x-5)(x+10)=0

x=5,-10