Algebra-1

To simplify (7m + 2n)², we can use the formula for the square of a binomial:

(a + b)² = a² + 2ab + b²

In this case, a is 7m and b is 2n. Substituting these values into the formula, we get:

(7m + 2n)² = (7m)² + 2(7m)(2n) +(2n)²
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