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## Homework Statement

Lets say I have 4 inputs x1 x0 y1 y0

if I have a sum-of-products say: x1x0'y1y0'+x0y1'y0

can I simplify it to x0y1'y0 by pulling out x0y1'y0 giving x0y1'y0(y0'+1) knowing that 1+y0 is 1 and 1*signalz is signalz.

Am I right in thinking this, I really dont want to do the truth table for this bad boy

thanks