What is the solution set of 2x2+x=15?

Mathematics

2 answers:

vodomira [7]4 years ago

7 0

4+x=15
---> x=15-4
---> x=11

Alexeev081 [22]4 years ago

5 0

Answer:

5/2,-3

Step-by-step explanation:

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$\bf \qquad \qquad \qquad \qquad \textit{function transformations}
\\ \quad \\
% function transformations for trigonometric functions
\begin{array}{rllll}
% left side templates
f(x)=&{{ A}}cos({{ B}}x+{{ C}})+{{ D}}\\
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% right side info
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$\bf \begin{array}{llll}


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now.. hmmm let's see, keeping in mind the template above

so, amplitude of 2, A=2, thus |A| = ±2, so, you can use either

and period of 4π, well, that simply means that

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-----------------------------\\\\

\begin{array}{llll}
f(\theta)=&\pm 2cos&\left(\frac{1}{2}\theta \right)\\
&\ \uparrow &\ \uparrow \\
&A&B
\end{array}$

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