x^2+8x+16 = x^2+4^2
x^2+4x+4 = x^2+2^2
x^2+10x+25 = x^2+5^2
x^2-12x+36 = x^2-6^2
x^2-x+0.25 = x^2-0.5^2
x^2+3x+2.25 = x^2+1.5^2
x^2+8x+16 = x^2+4^2
x^2+4x+4 = x^2+2^2
x^2+10x+25 = x^2+5^2
x^2-12x+36 = x^2-6^2
x^2-x+0.25 = x^2-0.5^2
x^2+3x+2.25 = x^2+1.5^2