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2 years ago

Which are the solutions of x2 = –7x – 8?

Mathematics

2 answers:

m_a_m_a [10]2 years ago

4 0

Answer:

The answer is the fourth option.

Step-by-step explanation:

You start by converting the equation into standard form, resulting in x2+7x+8. You would then use the coefficients and plug them into the quadratic formula, [-(7)+√7(7)-4(1)(8)]/2 and [-(7)-√7(7)-4(1)(8)]/2. Simplified, this would become (-7+√49-32)/2 and (-7-√49-32)/2. After adding the numbers in the square root, you are left with (-7+√17)/2 and (-7-√17)/2

Anit [1.1K]2 years ago

3 0

Answer

x= -7, -1

Step-by-step explanation:

x^2= -7x- 8

x^2+ 7x+ 8 =0

x+7=0 x+1=0

x=-7 x=-1

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Dima020 [189]

Answer:

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2 years ago

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Nat2105 [25]

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2 years ago

Read 2 more answers

I have to repost this because the first time I was not giving correct answers.

SSSSS [86.1K]

Answer and Step-by-step explanation:

We are given: 18x - 2(3x + 1) = 5x - 16

First, lets distribute the -2 to the 3x and 1.

18x - 6x - 2 = 5x - 16

Now, we combine like terms.

12x - 2 = 5x - 16

Next, we add 2 to each side.

12x = 5x -14

Now, we subtract 5x from both sides.

7x = -14

Finally, we divide by 7 on both sides.

x = -2

Statements: Reasons:

18x - 2(3x + 1) = 5x - 16 Given

18x - 6x - 2 = 5x - 16 Distributive Property of Equality

12x - 2 = 5x - 16 Combine like terms

12x = 5x -14 Addition Property of Equality

7x = -14 Subtraction Property of Equality

x = -2 Division Property of Equality

#teamtrees #WAP (Water And Plant)

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2 years ago