Question

please help I can't do this sum​

Answer 1

${x}^{2} + px + qx - pq \\ x(x + p) - q(x + p) \\ (x + p)(x - q)$

${a}^{2} - pq + a - apq \\ rearrange \\ \: \: {a}^{2} + a - pq - apq \\ a(a + 1) + pq(1 + a)$

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

Hope it helps ☺️ ☺️