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stiv31 [10]
3 years ago
15

-5+6(2x+2)=7 I need help

Mathematics
1 answer:
uysha [10]3 years ago
6 0

Answer:

x= -2; x=0

Step-by-step explanation:

-5+6|2x+2|=7

6|2x+2|=12

|2x+2|=2

x= -2; x=0

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Write each expression as a difference.<br> a+5
SCORPION-xisa [38]

The equivalent expression of a + 5 is -(-a - 5)

<h3>How to rewrite the expression?</h3>

The expression is given as:

a + 5

Multiply by 1

1 * (a + 5)

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Open the bracket

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8 0
2 years ago
Solve the equation for exact solutions over the interval​ [0, 2π​).
quester [9]

Answer:

\displaystyle x=\left\{0, \frac{2\pi}{3}, \frac{4\pi}{3}\right\}

Step-by-step explanation:

We want to solve the equation:

-2\cos^2(x)=-\cos(x)-1

Over the interval [0, 2π).

First, notice that this is in quadratic form. So, to make things simpler, we can let <em>u</em> = cos(x). Substitute:

-2u^2=-u-1

Rearrange:

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Factor:

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Zero Product Property:

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Back-substitute:

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Using the unit circle:

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7 0
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