Question

(x-5)^2-x^2=0 помогите

Answer 1

${x}^{2} - 10x + 25 - {x}^{2} = 0 \\ - 10x + 25 = 0 \\ 10x = 25 \\ x = 2.5$

Answer 2

$\tt(x-5)^2-x^2=0\\(x-5-x)(x-5+x)=0\\-5(2x-5)=0\\2x-5=0\\2x=5\\x=5:2\\x=2,5$