1/27m^4+26/27m^2-1=0
1/24m^4+26m^2/27m^4-27m^4/27m^4=0
1+26m^2-27m^4=0
Замена: m^2=t
-27t^2+26t+1=0|*(-1)
27t^2+26t+1=0
D= 26^2-4*27= 568=2√142
t1= 2√142-26/54
t2= -2√142-26/54
1)
f(2)=2+4=6
f(b)=b+4
f(b+2)=b+2+4=b+6
2) f(1/2)=-(1/2)²= - 1/4
f(a²+1)=- (a²+1)²= - (a⁴+2a²+1)= -a⁴-2a²-1
480=100%
360=x%
x=360*100/480
x=75
360=75%
10x-9y=8
21y+15x=0,5
30x-27y=24
-42y-30x=1
30x-27y-42y-30x=24+1
27y-42y=25
y=-1,7
10x-9*1,7=8
10x=23.3
x=2,33