Question

x²y-x+2xy²-2y, factorise the following algebraic expression by regrouping like terms.

Answer 1

${x}^{2} y - x + 2 x {y}^{2} - 2y \\ x \times (xy - 1) + 2x {y}^{2} - 2y \\ \\ x \times (xy - 1) + 2y \times (xy - 1) \\ (xy - 1)(x + 2y)$

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