3/4x > -1
If x e { -2, -1, 0, 1, 2, 3, 4, 5 }
Answers
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Answer:
Step-by-step explanation:
x
2
−4x+1=0
D=b
2
−4ac=16+4=20
x=
2a
−b±
D
=
2
4±2
5
=2±
5
now
x
3
x
3
−1
=(x−
x
1
)
3
−3(x−
x
−1
)
now x−
x
1
=2+
5
−
2+
5
1
=
2+
5
(2+
5
)
2
−1
=
2+
5
9+4
5
−1
=4
then, x
3
x
3
−1
=(4)
3
−3(4)=4[16−3]=13×4
x
3
−
x
3
1
=52.
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