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valentina_108 [34]
3 years ago
11

Help 8th grade math

Mathematics
1 answer:
kondor19780726 [428]3 years ago
5 0

you times each side by the number

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What is the factored form of the expression?<br><br> d^2 = 36d + 324
Veseljchak [2.6K]

Answer:

(x-43.45)(x+7.45)=0

Step-by-step explanation:

We have the quadratic equation d^{2}=36d+324  i.e. d^{2}-36d-324=0

As, the roots of the quadratic equation ax^{2}+bx+c=0 are given by x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}.

So, from the given equation, we have,

a = 1, b = -36 , c = -324.

Substituting the values in x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}, we get,

x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}

i.e. x=\frac{36\pm \sqrt{1296+1296}}{2}

i.e. x=\frac{36\pm \sqrt{2592}}{2}

i.e. x=\frac{36\pm 50.9}{2}

i.e. x=\frac{36+50.9}{2}  and x=\frac{36-50.9}{2}

i.e. x=\frac{86.9}{2}  and x=\frac{-14.9}{2}

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be (x-43.45)(x+7.45)=0

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3 years ago
Which of the following shapes are polygons with more than 444 sides?
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Kaylee decided to donate 30% of her savings if she has $238 in her savings account about how much will she Donate
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$71.40

Step-by-step explanation:

Turn the percentage 30 to a decimal, which is 0.3 then multiply it by 238 to get 71.4

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Answer: Pancreas

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The Pancreas is shown.

Please leave mark as brainliest if I helped you out. :)

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1 year ago
Brainliest and Five Stars for correct answers
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3 years ago
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