Домножуємо на √10+√2
5√10+5√2-√50-√10/10-2=5√10+5√2-5√2-√10/8=4√10/8=√10/2=1.6
домножуємо на √b+2
(b-4)(√b+2)/(√b-2)(√b+2)=√b+2
√x(√x-3)/2(√x-3)=√x/2
A) x(6x + 0,5) = 0
x= 0
6x + 0,5 = 0
6x= -0,5
x= -1/12
1. 8*х+2>7*x-4
8x-7*x>-4-2
x>-6
2. (5*x-9)/(x-2)-(3-2*x)/(2-x)=(5*x-9)*(x-2)+(3-2*x)/(x-2)=(5*x-9+3-2*x)/(x-2)=
=(3*x-6)/(x-2)=3*(x-2)/(x-2)=3