X + y = -36
x * y = 160
x = -36 - y
(-36-y) * y = 160
-36y - y^2 = 160
y^2 + 36y + 160 = 0
y = -5.19 and x = -30.8
or
y = -30.8 and x = -5.19
You can write them in this form too
x+ysqrt(z)
With wat?
Yes
Step by step explanation
4 friends evenly dividing up a n - slice pizza
So each one get
slices of pizza.
For example, if n = 12 slice then each friend gets 12/4 = 3 pieces. If Harris ate one slice less then he ate
=3 -1 = 2 pieces.
So the general expression for slices of pizza did Harris eat is

.17 because there is a zero behind the 7! .170 and .165. .17 is bigger
Area = pi x radius squared... so
a = pi x 10in^2
a = 314.159