How do you solve for y?
8x-4xy=3
And -2x-5y=10
Eq1: 8x - 4xy = 3
Eq2: -2x - 5y = 10
In Eq2, solve for X:
-2x - 5y = 10
-2x = 5y + 10
X = -5y/2 - 5
In Eq1, replace X with -5y/2 - 5:
8(-5y/2 - 5) - 4y(-5y/2 - 5) = 3
-20y - 40 + 10y^2 + 20y = 3
10y^2 - 40 = 3
Divide both sides by 10:
y^2 - 4 = 0.30
y^2 = 0.30 + 4 = 4.30
Y = -2.074, and 2.074