Question

Simplify: 81m² + 49n² 9m-7n 7n-9m​

Answer 1

Answer:

The expression 81m² + 49n² 9m-7n 7n-9m,

is not factorable with rational numbers.

To simplify the irrational number;

(81m^2+49n^29m-7n^7n-9m),

Follow the steps :-

STEP 1 :-

Equation at the end of step 1

(((81•(m2))+((49•(n29))•m))-(7n7•n))-9m

STEP 2:-

Equation at the end of step 2

(((81•(m2))+(72n29•m))-7n8)-9m

STEP 3 :-

Equation at the end of step 3

((34m2 + 72mn29) - 7n8) - 9m

STEP 4:-

Checking for a perfect cube;

4.1 49mn29+81m2-9m-7n8 is not a perfect cube

Final result :

49mn29 + 81m2 - 9m - 7n8