Question

Factorise the term 4a⁴+81b⁴​

Answer 1

Answer:

4a^2+36a^2b^2+81b^2

Step-by-step explanation:

4a^4+81b^4

((2a)^2+(9b)^2)^2

It is in the form of (a+b)^2

(a+b)^2 = a^2+2ab+b^2

here, a=(2a)^2

b=(9b)^2

=(2a)^2+2(2a)^2(9b)^2+(9b)^2

=4a^2+36a^2b^2+81b^2

I think it helps you..