if a-b=6 and ab=5 find a)a^3-b^3 b)a^2+b^2
Answers
Answered by
3
Step-by-step explanation:
Hey there!
Praneeth from Brainly.in here to help!
Given
➻ ab=20,
➻ (a-b)=6
➟ (a-b)³=a³-b³-3ab(a-b)
➟ (a-b)³=a³-b³-3a²b+3ab²
➟a ³-b³=(a-b)³+3ab(a-b)
➺ 6³+3*20(6)
➺ 216+360
➺ 576
∴a³-b³=576
hope helped!
Answered by
3
Answer:
Your answer is here:-
Step-by-step explanation:
- Given
- ab=20
- (a-b)=6
- (a-b)³=a³-b³-3ab(a-b)
- (a-b)³=a³-b³-3a²b+3ab²
- a ³-b³=(a-b)³+3ab(a-b)
- 6³+3*20(6)
- 216+360
- ∴a³-b³
- =576.
Mark brainliest if it helps and plz follow me.
Similar questions