1)5,42×5,42=29,3764
2)3,58×3,58=12,8164
3)10,84×3,58=38,8072
4)29,3764+38,8072=68,1836
5)68,1836+12,8164=80,994
x^4+6x^3+9x^2-14x^2-42x+40=0
1)0.01х²>1
0.01х²-1>0
y=0.01х²-1
0.01х²-1=0
0.01х²=1
x²=100
x=+-10
x ∈ [-10;10]
2)0.01х²>1
x∈ (-∞;-10) U (10;+∞)
3) 1\2x²>12
1\2x²-12>0
y=1\2x²-12
1\2x²-12=0
1\2x²=12
x²=24
x=+-√24