Question

factorise 10a^2-20ab-10b^2​

Answer 1

Answer:

10(a-b)^2

Step-by-step explanation:

10(a^2-2ab+b^2)

10(a-b)^2                           {a^2-2ab+b^2 = (a+b)^2}]

Answer 2

Answer:

10(a-b^2)^2

Step-by-step explanation:

10a^2 - 20ab^2 + 10b^4

= 10(a^2 - 2ab^2 + b^4)

= 10(a - b^2)^2                   [(a-b)^2 = a^2 - 2ab^2 + b^2]