Question

Solve(3m-5)^2 with appropriate identies

Answer 1

Answer:

(3m-5)² (a-b)²=a²-2ab+b²

(3m) ²-2×3m×5+5²

9m²-30m+25

Answer 2

Answer:

identity used is ( a-b) to the whole square

(a-b)=a square -2ab + b square

a=3m,b=5

(3m) to the whole square

-2(3m)(5)+5 square

9msquare -30m+25