Chapter 12.3, Problem 4OE

To determine

To read: the equation $5d^2+9d=2$ in standard form and tell what the values of a, b and c are.

Answer to Problem 4OE

The required answer is: the values are a = 5, b = 9 and c = - 2

Explanation of Solution

Given information:

The given equation: $5d^2+9d=2$

Calculation:

The standard form of a quadratic equation is given by:

  $a{x}^2+bx+c=0$

  $\begin{array}{l}5d^2+9d=2\\ 5d^2+9d-2=2-2\end{array}$

(Subtract 2 from both sides)

  $5d^2+9d-2=0$

(Simplify)

The equation is in standard form.

Hence, the values of a, b and c are:

  $\begin{array}{l}a=5\\ b=9\\ c=-2\end{array}$