Evaluating an expression with two variables ex 3, (2a + 2b)^2; a = 3; b = 4

The video tutorial explains how to solve an algebraic expression by substituting given values for variables and applying the order of operations. The expression involves multiplication and squaring, and the tutorial emphasizes the importance of following the correct sequence of operations to arrive at the correct result. The final calculation demonstrates the solution to the expression, highlighting the need to memorize basic multiplication squares.

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