A^2 - b^2 = (a-b)(a+b)
To test it, expand the right hand side.
Answer:
130
Step-by-step explanation:
The point-slope form:

m - slope
x₁, y₁ - the coordinates of a point
It passes through the points (1,-2) and (2,2).

Answer:
<h2>(-3) + 4x + 2 + 2x + 2x = 8x - 1</h2>
Step-by-step explanation:
(-3) + 4x + 2 + 2x + 2x <em>combine like terms</em>
= (4x + 2x + 2x) + (-3 + 2)
= 8x - 1
I think it's 36. Because 7x3=21 and 12x3=36