Question

factorise m square - 4m+ 4​

Answer 1

${m}^{2} - 4m + 4 \\ 4 {m}^{2} = - 2m \times - 2m \\ {m}^{2} - 2m - 2m + 4 \\ m(m - 2) - 2(m - 2) \\ (m - 2) \times (m - 2) \\ {(m - 2)}^{2}$