# 1. Task 1 

What number should the asterisk be replaced with so that the equation $(2 x-7)^{2}+(5 x-*)^{2}=0$ has a root?

#
# 1. Task 1 

What number should the asterisk be replaced with so that the equation $(2 x-7)^{2}+(5 x-*)^{2}=0$ has a root?

Answer: 17.5