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stiv31 [10]
3 years ago
7

Solve x^2=12x-15 by completing the square. which is the solution set of the equation?​

Mathematics
1 answer:
svlad2 [7]3 years ago
6 0

Use the formula  (b/2)^2 in order to create a new term. Solve for  x  by using this term to complete the square.

Exact Form:

x  =  ±√21  +  6

Decimal Form:

x  =  10.58257569…, 1.41742430…

____

I hope this helps, as always. I wish you the best of luck and have a nice day, friend..

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The temperature outside of Brandon's house is −5°F, while the temperature outside of Nick's house is 3°F. How many degrees warme
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2 years ago
Which relation is a function?
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Hope this helps! :)

6 0
2 years ago
Read 2 more answers
Look at the graph shown below:
ElenaW [278]
So.. take a peek at the picture... let's get two points from it, hmm say 0,4 notice it touches the y-axis there, and say hmmm -4, 1, almost at the bottom of the line

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
&({{ 0}}\quad ,&{{ 4}})\quad 
%   (c,d)
&({{ -4}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{1-4}{-4-0}

\bf y-{{ y_1}}={{ m}}(x-{{ x_1}})\qquad 
\begin{array}{llll}
\textit{plug in the values for }
\begin{cases}
y_1=4\\
x_1=0\\
m=\boxed{?}
\end{cases}\\
\textit{and solve for "y"}
\end{array}\\
\left. \qquad   \right. \uparrow\\
\textit{point-slope form}

once you get the slope and solve for "y", that'd be the equation of the line.
7 0
3 years ago
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