(x+2y)^2 = x^2 + 4xy + 4y^2
That help?
If x+2y=4 and xy=-8, what is the value of x^2+4y^2.
I have been thinking about this and can't make heads or tails of it.
1 answer
I have been thinking about this and can't make heads or tails of it.
1 answer