Question

if a-b=18, a³-b³=324 then find ab​

Answer 1

Answer:

ab= (-102)

Step-by-step explanation:

since,

a^3-b^3= (a-b)(a^2+b^2+ab)

so,

(18)(18)= (18)(a^2+b^2+ab)

18= a^2+b^2+ab

Now,

subtracting both side by (3ab)

18-3ab = a^2+b^2+ab-3ab

18-3ab = (a-b)^2

3ab = 18-(18)^2

3ab = 18-324

3ab = (-306)

ab = (-306)/3

ab = (-102)

Hoping it would help you out!!!

Answer 2

Answer:

- 102

Step-by-step explanation:

See the upper buddy answer its correct XD lol ..