Question

let's factorise:225m²-100n²​

Answer 1

Answer:

25(3m - 2n)(3m + 2n)

Step-by-step explanation:

225m²-100n²

(15m - 10n)(15m + 10n)

25(3m - 2n)(3m + 2n)

Answer 2

Answer:

(15m)^2-(10n)^2

(15m-10n)(15m+10n)