Question

What is the expansion formulae of (10m-5n)(10m-5n)​

Answer 1

Answer:

(10m-5n)^2

Step-by-step explanation:

use formula (a-b)^2 = a^2+b^2-2ab

therefore, a=10m and b=5n

putting the values in this formula we get,

=(10m)^2 + (5n)^2 - (2) * (10m) * (5n)

=100m^2 + 25n^2 - 100mn

Answer 2

Step-by-step explanation:

(10m-5n)(10m-5n)

(10m-5n)²

(10m)²-2×10m×5n+(5n)²

100m²-100 mn+25n²