## Elementary Technical Mathematics

$$(2x-3)(2x-3)$$ or $$(2x-3)^{2}$$
$4x^{2}-12x+9$ Step 1 This is the a perfect-square trinomial; so to solve it just take the square root of the 1st and 3rd terms. $\sqrt {4x^{2}}=2x$ $\sqrt {c^{2}}=3$ Step 2 To find the signs in the parenthesis, just copy the sign from the 2nd term. Step 3 Write the solution. $(2x-3)(2x-3)$