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How many solutions does this system of equations have y=2x+5Y=x^3+4x^2+x+2

How many solutions does this system of equations have y=2x+5Y=x^3+4x^2+x+2-example-1
User Mars
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1 Answer

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18 votes

ANSWER:

D. 3 solutions

Step-by-step explanation:

Given:


\begin{gathered} y=2x+5 \\ \\ y=x^3+4x^2+x+2 \end{gathered}

To find:

The number of solutions this system has

Let's equate the two equations and solve for x;


\begin{gathered} 2x+5=x^3+4x^2+x+2 \\ \\ x^3+4x^2-2x+x+2-5=0 \\ \\ x^3+4x^2-x-3=0 \end{gathered}

Since the highest power of x is 3, therefore, the system of equations will have 3 solutions

User Shwetanka
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