Algebra-1

To simplify (10a + 3b)², we can use the formula for the square of a binomial:

(a + b)² = a² + 2ab + b²

In this case, a is 10a and b is 3b. Substituting these values into the formula, we get:

(10a + 3b)² = (10a)² + 2(10a)(3b) +(3b)²