(3a-2)²

To expand the expression \((3a - 2)^2\), we can use the formula for the square of a binomial, which is \((x - y)^2 = x^2 - 2xy + y^2\). Here, \(x = 3a\) and \(y = 2\). Using the formula: \[ (3a - 2)^2 = (3a)^2 - 2(3a)(2) + 2^2 \] Now, calculating each term: 1. \((3a)^2 = 9a^2\) 2. \(-2(3a)(2) = -12a\) 3. \(2^2 = 4\) Putting it all together: \[ (3a - 2)^2 = 9a^2 - 12a + 4 \] So, the expanded form of \((3a - 2)^2\) is \(\boxed{9a^2 - 12a + 4}\).