Question

find the product of following /expand 1.[2x + 3y] [2x - 3y]​

Answer 1

Answer:

$(2x + 3y)(2x - 3y) \\ = > (a + b)(a - b) = {a}^{2} - {b}^{2} \\ = ({2x})^{2} - ({3y})^{2} \\ = 4 {x}^{2} - 9 {y}^{2}$

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