Please help me simplify this formula by using boolean algebra rules:
I know that the answer should be: $(x_1'x_3'x_4')+(x_1'x_2x_4')+(x_2'x_3x_4)$ from Karnaugh map. I also put it in logic friday and it simplified to this. I have so far tried to factor out the common characters, but it didnt seem to lead anywhere near the final answer.
Also noticed another way: $x_3'x_4'(x_1'x_2+x_1'x_2')+x_3x_4(x_1'x_2'+x_1x_2')+x_1'x_2x_3x_4' $
My guess is that i would need to get my equation to a form where i can use the law of absorption somehow to get rid of something, but how is the question.