If my ans was helpful u can follow me
You can use a calculator for this if your teacher lets you to make it easier
If this is just factoring, x^2 + x - 90 turns into this:
(x - 9)(x + 10)
If your trying to solve for x, we take the factored expression and set it equal to 0.
(x - 9)(x + 10) = 0
Set each binomial into two equations.
x - 9 = 0 and x + 10 = 0
Solve for x and we get two answers.
x = 9
x = -10
Answer:
y = 1/2x + 2
Step-by-step explanation:
m = -2, (3, - 1)
y - - 1 = -2(x - 3)
y + 1 = -2x +3
y = - 2x + 2
Perpendicular line slope: 1/2x
y = 1/2x +2
Mikas is correct because 12.2 x 16 is 195.2, which estimated is 195, and then 8.5 x 36 is 306, which is close enough to the answer. I hope I helped.:)