2. consider the equation x2 + 8x = 10.
(a) show how to solve the equation by completing the square.
(b) show how to solve the equation by using the quadratic formula. round solutions to the nearest tenth if needed.

ANSWER

x=1.1 or x=-9.1

EXPLANATION

Ad the square of half the coefficient of x to both sides:

The left hand side is now a perfect square.

Take square root

x=1.1 or x=-9.1

Using the quadratic formula, we need to rewrite the given equation to get;

where a=1, b=8 and c=-10

The solution is given by:

We substitute the values into the formula to get;

x=1.1 or x=-9.1

to the nearest tenth.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue