Question

Simplify:-

(4a+5b)^3 - (4a-5b)^3 - 30b(16a^2-25b^2)​

Answer 1

Step-by-step explanation:

Rewrite the whole as a fraction using (5b-4a)2 as the denominator :

24a2 24a2 • (5b - 4a)2

24a2 = ———— = —————————————————

1 (5b - 4a)2

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Answer 2

Answer:

4a+5b and 4a−5b

Product =(4a+5b)(4a−5b)

So we get  =16a2−25b²