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andrey2020 [161]
2 years ago
11

What is the solution of the inequality x^3+3x^2>7x+6

Mathematics
1 answer:
sveta [45]2 years ago
3 0

Answer:

<u><em>x>2</em></u>

Step-by-step explanation:

<u><em>x3+3x2=7x+6</em></u>

<u><em>x3+3x2−(7x+6)=7x+6−(7x+6)</em></u>

<u><em>x3+3x2−7x−6=0</em></u>

<u><em>(x−2)(x2+5x+3)=0</em></u>

<u><em>x−2=0 or x2+5x+3=0</em></u>

<u><em>x=2 or x=−0.6972243622680054 or x=−4.302775637731995</em></u>

<u><em>x<−4.302776</em></u>

<u><em>−4.302776<x<−0.697224</em></u>

<u><em>−0.697224<x<2</em></u>

<u><em>x>2(Works in original inequality)</em></u>

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Add '9' to each side of the equation. -9 + 9 + 49x^2 = 0 + 9
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3 years ago
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2 years ago
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3 0
3 years ago
Read 2 more answers
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Flura [38]

Answer:

Angle A = Angle Y

Angle B = Angle Z

Angle C = Angle X

AB = YZ

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Step-by-step explanation:

Find this by looking at the corresponding parts on the other triangle. They have the same marking on them. Make sure that when answering for segments or triangles that the order is the same on both sides.

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3 years ago
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jenyasd209 [6]

Answer:

A is correct

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5 0
3 years ago
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