3 years ago

SOME ONE HELP ME WILL GIVE BRAINLIEST

Mathematics

1 answer:

makvit [3.9K]3 years ago

8 0

First answers is 2, 5, -0.2(-1/5), -0.5 (-1/2)

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

Yanka [14]

You can start by rewriting the equation so that the right side equals zero. Add $-7x$ and $8$ to both sides.

$x^2+7x+8=0$

You can now use the quadratic equation (below), where $a=1, b=7,$ and $c=8$ , to find solutions. Plug in these values for $a, b,$ and $c$ into the equation and simplify.

$\frac{-b \pm \sqrt{b^2-4(ac)}} {2a}$
$\frac{-7 \pm \sqrt{7^2-4(1 \times 8)}} {2 \times 1}$
$\frac{-7 \pm \sqrt{49-32}} {2}$
$\frac{-7 \pm \sqrt{17}} {2}$

The final answer is the combination of both solutions.
$x=\frac{-7}{2} \pm \frac{\sqrt{17}} {2} \approx -3.5 \pm 2.06.$

Or approximately...
$x=(-3.5-2.06) \approx -5.56, (-3.5+2.06) \approx-1.44$

8 0

3 years ago

Read 2 more answers

Carrie gets 5 points for each answer and has already earned 10 points of extra credit she needs at least 77 to pass

Nookie1986 [14]

Answers have to be more than or equal to 14

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4 years ago

If it takes 8 people to build a shed in 6 days, how long will it take 12 people?

djverab [1.8K]

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