Question

решите уравнения:
(х-5)^2=3^2+2
б) √(5-х) = 3 – х

Answer 1

(x-5)^2=3^2 + 2
x^2 - 10x+25=11
x^2 - 10x +14=0
D=b^2-4ac=100-4*1*14=44=2√11
x1=10+2√11 /2
x1= 5+√11
x2= 5- √11

Answer 2

б) √(5-x) = 3 - x

Answer 3

5-x= 9 + x^2

Answer 4

вроде

Answer 5

хотя нет! Вот: 5-x=9 - 6x + x^2