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How do I solve this rational equation in the form of a proportion?

How Do I Solve This Rational Equation In The Form Of A Proportion class=

Sagot :

Answer:

[tex]\text{ From least to greatest, the solutions are x=-4 and x=-8.}[/tex]

Step-by-step explanation:

As a first step do cross multiplication and expand:

[tex]\begin{gathered} x-2=(x+10)(x+3) \\ x-2=x^2+3x+10x+30 \end{gathered}[/tex]

Organize the equation as the standard form of a quadratic equation:

[tex]ax^2+bx+c=0[/tex]

Then, organizing the equation:

[tex]\begin{gathered} x^2+12x+32=0 \\ \end{gathered}[/tex]

To solve a quadratic equation, use the quadratic formula:

[tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

Hence, for the quadratic equation above, identify a,b, and c:

a=1, b=12, and c=32.

[tex]\begin{gathered} x_1=\frac{-12+\sqrt{12^2-4(1)(32)}}{2(1)}=-\frac{8}{2}=-4 \\ x_2=\frac{-12-\sqrt{12^2-4(1)(32)}}{2(1)}=-\frac{16}{2}=-8 \end{gathered}[/tex]

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