Question

factories by regrouping x³-1+x² -x​

Answer 1

Answer:

${x}^{3} - 1 + {x}^{2} - x \\ = {x}^{3} + {x}^{2} - x - 1 \\ = {x}^{2} (x + 1) - 1(x + 1) \\ = (x + 1)( {x}^{2} - 1) \\ = (x + 1)(x + 1)(x - 1)$