Question

3. Решите уравнение:
а). Х^2 – 64 =0 ; б). 1, 69 –Х^2 = 0

Answer 1

1) х^2=64
х=8
2) -х^2=-1,69
х=1,3

Answer 2

Х^2 – 64 =0
Х^2 = 64  
Х=-8 , Х=8
(-8)^2=64
8^2=64



1, 69 –Х^2 = 0
1, 69 =Х^2 
Х=-1,3 ,
Х=1,3