3 years ago

Solve 2x2 + 8x + 10 = 0. using this model to he X = -b+ ✓ 62 - 4ac 2a

Mathematics

1 answer:

Lesechka [4]3 years ago

8 0

Answer:

x can have two complex solutions, which are:

-2 + i

-2 - i

Step-by-step explanation:

2x² + 8x + 10 = 0

4x² + 16x + 20 = 0

4x² + 16x + 16 = -4

(2x + 4)² = -4

2x + 4 = √-4

2x = -4 ± i√4

2x = -4 ± 2i

x = -2 ± i

So x is equal to -2 + i and -2 - i.

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What is the slope of the line that passes through the points (-1,1) and (1,-15)

Luda [366]

Answer:

$\boxed{\text{The slope is -8.}}$

Step-by-step explanation:

To find the slope of the line, you have to use a slope formula.

Slope formula:

$\Longrightarrow:\sf{\dfrac{y_2-y_1}{x_2-x_1} }$

⇒ y2=(-15)

⇒ y1=1

⇒ x2=1

⇒ x1=(-1)

Rewrite the whole problem down.

$\Longrightarrow: \sf{\dfrac{-15-1}{1-\left(-1\right)}=\dfrac{-16}{2}=\boxed{\sf{-8}}$

So, the slope is -8, which is our answer.

I hope this helps you! Let me know if my answer is wrong or not.

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