Question

in this question how i can solve it please tell me​

Answer 1

Step-by-step explanation:

${(m - n)}^{2} = {m}^{2} + {n}^{2} - 2mn \\ = > {(m - n)}^{2} = {56} - 2 \times (16) \\ = > {(m - n)}^{2} = 56 - 32 = 24$