Chapter A.3, Problem 9E

Interpretation Introduction

Interpretation:

The positive solution of the given equation has to be calculated.

Concept introduction:

Quadratic equation:

An equation involving only powers of $x$ in which the highest power is 2. General form of this equation is given by

$\begin{array}{l}{\text{ax}}^{\text{2}}\text{+}\text{bx}\text{+}\text{c}\text{=}\text{0}\\ \text{where,}\\ \text{a,}\text{b}\text{and}\text{c}\text{are}\text{constants}\text{.}\end{array}$

The value of $x$ is calculated by using the values of $\text{a,}\text{b}\text{and}\text{c}$

$\text{x}\text{=}\frac{\text{-}\text{b}\text{±}\sqrt{{\text{b}}^{\text{2}}\text{-}\text{4ac}}}{\text{2a}}$

To find: The positive solution of the given equation