2a - 3b = 3 and ab = 2, then find the value of 8a^3 - 27b^3. Please help me, with full procedure and steps.
Share
2a - 3b = 3 and ab = 2, then find the value of 8a^3 - 27b^3. Please help me, with full procedure and steps.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
-94.5
Step-by-step explanation:
2a-3b=3 -----(i)
ab = 2----(ii)
b=2/a----(iii)
put (iii) in (ii)
2a - 3(2/a) = 3
2a - 6a = 3
-4a=3
-a=3/4
a=-3/4
then (iii)
b = 2(-0.75). [ •.• -3/4 = -0.75]
b= 1.5
=8(-0.75)³-27(1.5)³
=8(-0.422)-27(3.375)
=-3.376-91.125
=-94.5
Verified answer
Answer:
Step-by-step explanation:
Menai account to banaya but yaar vo chal hi nahi rha
hang ho rha hai
kuch bhi open nahi ho rha :(
You too have a great day bro ^_^