Solve x2 − 24x = −80 by completing the square. what is the solution set of the equation? {2, 40} {4, 20} {5, 16} {8, 10}

Answer : {4, 20}

Use completing the square method to solve

In completing the square method, we take half of coefficient of x  and square it.

Then add it on both sides

The coefficient of -24x  is -24

Divide it by 2 ,

Now square it , (-12)^2 = 144

Then add it on both sides

Now take square root on both sides

(x - 12) = + - 8

Now we make two equations and solve for x

x - 12 = +8    and x - 12 = -8 ( add 12 on both sides)

x = 20   and x= 4

Solution set is {4, 20}

can you me with a question

step-by-step explanation:

what do the lines making a circle around the high-pressure area indicate

a. an occluded front

b. areas of equal altitude

c. areas of equal pressure

d. a stationary front