Solve the following system:
{y = 6 x - 24
{x = 9 x
In the second equation, look to solve for x:
{y = 6 x - 24
{x = 9 x
Subtract 9 x from both sides:
{y = 6 x - 24
{-8 x = 0
Divide both sides by -8:
{y = 6 x - 24
{x = 0
Substitute x = 0 into the first equation:
{y = -24
{x = 0
Collect results in alphabetical order:
Answer: {x = 0
{y = -24
Answer:
-145.44
Step-by-step explanation:
Answer:
Sophie factored completely.
Carlos did not factor out a 2 out of his last term
Step-by-step explanation:
-4x² − 10x + 6
Sophie factored it as -2(2x − 1)(x + 3) and Carlos factored it as (x + 3)( -4x + 2).
If you look at the last term in Carlos
(x + 3)( -4x + 2)
You can factor out a -2
(x+3) (-2)(2x-1)
It is not factored completely with the negative two inside the parentheses
He could also have factored out a 2
(x+3) (2)(-2x+1)
I like having a positive x so I use the -2
Either would be acceptable.
Answer:
Step-by-step explanation:
y^2-25 factored is (y+5)(y-5)
y^2+2y-24 factored is (y-4)(y+6)