Find the roots of the quadratic equation x^2 – 8x = 9 by completing the square. show your work.

x = -1

x = 9

Step-by-step explanation:

First you have to equals the equation to zero, then you have to find two numbers that their sum equals 8 and multiplied equals -9. In this case, those numbers are -1 and 9.

After you find those numbers, you split the equation and equals each term to zero.

So the answer is x=-1 and x=9

Hope you understand!

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

there is nothing below so i cannot

step-by-step explanation: