MCQ
Factorise: $x^4 - (x - z)4$
- A$(2x^2 - 2xz + z^2)$
- B$(2x - z) (2x^2 - 2xz + z^2)$
- ✓$z(2x - z) (2x^2 - 2xz + z^2)$
- DNone of these
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Daily wages
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Number of works
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$290-325$
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$5$
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$325-360$
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$2$
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$360-395$
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$4$
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$395-430$
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$6$
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$430-465$
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$7$
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$465-500$
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$5$
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