Question

x^2-13x+q=0
x=12.5
q-?

Answer 1

12,5*12,5 - 13*12,5 = -q;
156.25 - 162.5 = -q;
-6.25 = -q; q = 6.25

Answer 2

x^2-13x+q=0
x=12.5
q-?
(12.5)^2-13×12.5+q=0
156,25-162,5+q=0
q=6,25

Answer 3

Можете еще один задачу решить

Answer 4

x^2-12x+q=0

Answer 5

x=2 q-? x2-?

Answer 6

позже(

Answer 7

2^2-12×2+q=0 ; 4-24+q=0 ; q=20; x^2=2^2=4