Answer:
The answer is 25x^2 + 30xy + 9y^2
Step-by-step explanation:
There is a formula that can easily help you solve this:
(a + b)^2 = a^2 + 2ab + b^2
In this problem, a is 5x and b is 3y.
So, (5x)^2 + 2 (5x)(3y) + (3y)^2
(5x)^2 is equal to (5x)(5x), which is equal to 25x^2.
2 times 5x is 10x, and 10x times 3y is 30xy.
(3y)^2 is equal to (3y)(3y), which is equal to 9y^2.
Thus, your answer is 25x^2 + 30xy + 9y^2
