18 is not a perfect square
The red one is and the blue one is
The black points are the y-intercepts and and purple ones are the x-intercepts.
5C2 * (2x)^3 * y^2
5 * 4 / 2 * 8 * x ^ 3 * y ^ 2
20 / 2 * 8 * x ^ 3 * y ^ 2
80 * x^3 y^2
Answer = 80
x=4x+3
Simplifying
x = 4x + 3
Reorder the terms:
x = 3 + 4x
Solving
x = 3 + 4x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-4x' to each side of the equation.
x + -4x = 3 + 4x + -4x
Combine like terms: x + -4x = -3x
-3x = 3 + 4x + -4x
Combine like terms: 4x + -4x = 0
-3x = 3 + 0
-3x = 3
Divide each side by '-3'.
x = -1
Simplifying
x = -1