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Afina-wow [57]
3 years ago
9

Use zero property to solve the equation. F(x)=3x(x+7)-2(x+7)

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
7 0

Answer:

x = -7 or x = 2/3

Step-by-step explanation:

I'm assuming you meant solve for x when f(x) = 0.

f(x) = 3x(x + 7) - 2(x + 7)

0 = (x + 7)(3x - 2) -- Both terms have a common factor of (x + 7) so we can group them

x + 7 = 0 or 3x - 2 = 0 -- Use ZPP

x = -7 or x = 2/3 -- Solve

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Answer:

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Step-by-step explanation:

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Answer:

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The first term is 3. The common difference is 2.

Step-by-step explanation:

The first term is x.

The common difference is d.

The second term is x + d.

3rd term: x + 2d

4th term: x + 3d

7th term: x + 6d

"The fourth term of an Arithmetic Sequence is equal to 3 times the first term"

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"the seventh term exceeds twice the third term by 1"

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Simplify Eq. 1:

2x = 3d

Simplify Eq. 2:

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Multiply both sides of the last equation by 2.

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Since 2x = 2x, then the right sides are equal.

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d = 2

2x = 3d

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Answer:

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