X^2+6x-16=0 solve each equation by completing the square

The solution of the equation is and

Explanation:

Given that the equation is

We need to determine the solution of the equation by completing the square.

Thus, we have,

Adding both sides of the equation by 16, we get,

Let us solve by completing the square.

To bring the equation in the form of , let us add to both of the equations.

Thus, we have,

Simplifying, we get,

Taking square root on both sides of the equation, we get,

Thus, the two solutions of the quadratic equation are

and

Simplifying the two values, we get,

and

Thus, the roots of the equation are and

the answer is 31.27mph

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart