+130511 We can write
(-2 - √x) (-2 - √x)
We can factor a "-1" out of both expressions
(-1) (2 + √x) * (-1)(2 + √x) = (-1)(-1)(2 + √x)(2 + √x) = (2 + √x)(2 + √x)
So, multiply the 2's together to get 4
And multiplying 2 times √x and 2 times √x and adding them together gives 4√x
And √x *√x = x
So putting all this together gives us
4 + 4√x + x
+130511 We can write
(-2 - √x) (-2 - √x)
We can factor a "-1" out of both expressions
(-1) (2 + √x) * (-1)(2 + √x) = (-1)(-1)(2 + √x)(2 + √x) = (2 + √x)(2 + √x)
So, multiply the 2's together to get 4
And multiplying 2 times √x and 2 times √x and adding them together gives 4√x
And √x *√x = x
So putting all this together gives us
4 + 4√x + x
