Answer: (x + 13y) • (x - 4y)
Step-by-step explanation: Step 1 :
Equation at the end of step 1 :
((x2) + 9xy) - (22•13y2)
Step 2 :
Trying to factor a multi variable polynomial :
2.1 Factoring x2 + 9xy - 52y2
Try to factor this multi-variable trinomial using trial and error
Found a factorization : (x + 13y)•(x - 4y)