simplify (2x+y)^2
x=2 right?
help please
Since this is not an equation, we cannot determine the value of 2.
I don't know what they mean by simplify here. If you expand it out you get
4x^2 + 4xy + y^2
but that's not simpler, in my opinion. I think the problem as shown is not complete.
To simplify the expression (2x + y)^2, you need to expand it using the formula for expanding a binomial squared.
Step 1: Replace x with 2 in the expression.
(2(2) + y)^2
Simplifying this, we get:
(4 + y)^2
Step 2: Expand the binomial squared using the formula (a + b)^2 = a^2 + 2ab + b^2.
(a + b)^2 = a^2 + 2ab + b^2
In our case, a = 4 and b = y. Substituting these values, we get:
(4)^2 + 2(4)(y) + (y)^2
Now, we can simplify this further:
16 + 8y + y^2
Therefore, the simplified expression of (2x + y)^2, where x = 2, is 16 + 8y + y^2.