If (x – 2)^2 = 144, which of the following could be the value of 2x?  Choose one
A) –26  B) –22  C) –11  D) 12  E) -20
You can also get to the answer by backsolving using answer choices   Starting with x = -10   (x – 2)^2 = 144   (-10– 2)^2 = 144 =====&gt; (-12)^2 = 144 Bingo, Clearly, among the answer choices only -10 will result in 144 in the equation so x must be -10,   Then 2x = 2 * -10 = -20   Answer: -20
<result>E</result>
If (x – 2)^2 = 144, which of the following could be the value of 2x?