Question

if 2a-2=4 and 0.005b =0.25 find the value of a3-b2

Answer 1

=> 2a-2=4. => 2a = 6. => a = 3.
=> 0.005b=0.25. => b = 0.25/0.005.
=> b = 50.

Now, to find a^3 - b^2
=> (3)^3 - (50)^2
=> 27 - 2500
=> -2473 (answer)


Hope it helps you.
Thank you.