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How do you factorise this?

Science & Mathematics by Anonymous 2018-05-18 16:11:02

Social Science

How do you factorise this?

1 answer

21x²y + 7xyz - 28xy²z An explanation would be great! Thank you!

  • Anonymous

    21x²y = 3·7x²y 7xyz 28xy²z = 2²·7xy²z Greatest common factor = 7xy 21x²y + 7xyz - 28xy²z = 7xy(3xy + z - 4yz)

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