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2 years ago

What are the solutions of x2 + 10x + 16 = 0?

Mathematics

2 answers:

Ivahew [28]2 years ago

8 0

−

Explanation:

Given:

To complete the square put the two

terms on the left and the constant on the right of the equation:

−

Complete the square by multiplying the

-term by

⋅

and adding the square of this number to the right side of the equation:

(

)

−

UNDERSTANDING CHECK:

(

)

The

was not in the original equation. If we add

to one side of the equation, we must add the same amount to the other side of the equation to keep it balanced.

(

)

To solve, square root both sides of the equation:

√

(

)

√

−

jolli1 [7]2 years ago

4 0

The answer is -2,-8

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Rina8888 [55]

Answer:

$S_\infty=250$ .

Step-by-step explanation:

The given infinite series is $50+40+32+\frac{128}{5}+...$ .

The first term of this series is $a_1=50$ .

The common ratio is $r=\frac{40}{50}$ .

$\Rightarrow r=\frac{4}{5}$ .

The sum of this infinite series is given by the formula,

$S_\infty=\frac{a_1}{1-r}$

We now substitute all the above values in to this formula obtain,

$S_\infty=\frac{50}{1-\frac{4}{5}}$

This implies that,

$S_\infty=\frac{50}{\frac{1}{5}}$

This simplifies to,

$S_\infty=50\times 5$

$S_\infty=250$ .

The correct answer is C.

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3 years ago

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Step-by-step explanation:

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UkoKoshka [18]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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ruslelena [56]

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