Regroup the terms and factorise z-19 + 19 xy - xyz
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Answer:
=(z - 19 + 19xy - xyz) (we just take common of -xy )
=(z - 19) - xy(z - 19)
=(z - 19)(1 - xy)
Step-by-step explanation:
1st=>. (we just take common of -xy)
2nd => ((we just take common in (z - 19)
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