Algebra-1

To simplify (9x + 4y)², we can use the formula for the square of a binomial:

(a + b)² = a² + 2ab + b²

In this case, a is 9x and b is 4y. Substituting these values into the formula, we get:

(9x + 4y)² = (9x)² + 2(9x)(4y) +(4y)²
...