Question

If m=3 and n=1 then find value
of m2-n2
2 Marks ☆​

Answer 1

Answer:

M=3 N=1

M²-N²=3²-1²=9-1=8

Answer 2

${m}^{2} - {n}^{2} \\ \\ = ( {3)}^{2} - ( {1)}^{2} \\ \\ = (3 + 1)( 3 - 1) \\ \\ = 4 \times 2 \\ \\ = 8.$