please help me solve this problem...
will mark as brainliest
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This can be factorised by grouping.
5z - 5xyz - 7 + 7xy
= (5 * z) - (5 * x * y * z) - (7 * 1) + (7 * x * y)
= 5z (1 - xy) - 7 (1 - xy)
= (1 - xy) (5z - 7)
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See in the attachment .
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