(x+10)^2=(5-x)^2 как решать

Question

(x+10)^2=(5-x)^2
как решать

Answer 1

Х^2 + 20x + 100 = 25 - 10x + x^2
x^2-x^2 + 20x + 10x = 25 - 100
30x = -75
x = - 2.5

Answer 2

(x+10)^2=(5-x)^2
x^2+20x+100=25-10x+x^2
x^2-x^2+20x+10x=25-100
30x=-75
x=-75/30
x=-2 15/30
x=-2 3/6
x=-2 1/2 = - 2,5

Comments

-2,5