2. Factor 1a - 36. 40' - 36 = (a? - 9) The GCF IS 4a (a2-) Write in the form x? - y factor the difference of two squares. Topic. Operation on Rational Algebraic Expressions. 3. Find the sum of 2(mn)+ 7(12) 12 / 2 2. + + Im mn Get the LCD of 2' im' mn Solve 61 - 55 4. Subtract 3r 2s 55 br 2s (55)-3r (1) Il Get the Icd of 3r and 2s Зr 2s Solve​