What is the GCF of 12a^4b^2 - 3a^2b^5 ??

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

What expression is equivalent to (2x-1)(x-3)?