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wel
3 years ago
13

How to solve n^2 + 10 - 8 + 80=0

Mathematics
2 answers:
Igoryamba3 years ago
6 0
What grade is this? !
OlgaM077 [116]3 years ago
5 0
Combine the constants into one:

n^2 + 88 = 0

This has two complex roots.

I suspect you may have meant n^2 + 10n + 78 = 0.

Double check the original problem and make any necessary corrections.

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How can I find the exact distance between the points(√7,-√2)and (4√7,5√2)
chubhunter [2.5K]
\bf \textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%  (a,b)
&({{ \sqrt{7}}}\quad ,&{{ -\sqrt{2}}})\quad 
%  (c,d)
&({{4\sqrt{7}}}\quad ,&{{ 5\sqrt{2}}})
\end{array}~~~
%  distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}
\\\\\\


\bf d=\sqrt{[4\sqrt{7}-\sqrt{7}]^2~+~[5\sqrt{2}-(-\sqrt{2})]^2}
\\\\\\
d=\sqrt{(4\sqrt{7}-\sqrt{7})^2~+~(5\sqrt{2}+\sqrt{2})^2}\implies d=\sqrt{(3\sqrt{7})^2~+~(6\sqrt{2})^2}
\\\\\\
d=\sqrt{3^2\cdot 7~~+~~6^2\cdot 2}\implies d=\sqrt{63+72}\implies d=\sqrt{135}
\\\\\\
\begin{cases}
135=5\cdot 3\cdot 3\cdot 3\\
\qquad 5\cdot 3^2\cdot 3\\
\qquad 15\cdot 3^2
\end{cases}\implies d=\sqrt{15\cdot 3^2}\implies d=3\sqrt{15}
8 0
3 years ago
Please helppppppppp.....
Lana71 [14]

Answer: B

Step-by-step explanation:

7 0
3 years ago
10n - 16 = 2(5n-8)] 15n + 25
Margaret [11]
The answer is 1.48226407 hope it helps
5 0
2 years ago
Read 2 more answers
The equation of a line is x + 5y = 12.
Svet_ta [14]

Answer: C: 12/5

Step-by-step explanation:

y intercept is where x is 0, so set x equal to 0

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y=12/5

4 0
2 years ago
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Murljashka [212]

the answer is 5. hope this helps

Pls mark as brainliest


3 0
3 years ago
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