a-b =5 ab= 14 find the value of (a³-b³)
Answers
Answered by
1
Answer:
a³-b³ = (a-b) (a²+ab+b²)
[using identity:- a³-b³ = (a-b) (a²+ab+b²)]
= 5(14 + a² + b²)
= 70+ 5a² + 5b²
hope u got it... ☺️
Answered by
0
Answer:
a³ - b³ = 335
Step-by-step explanation:
a³ - b³ = (a - b) (a² + ab + b²)
~~~~~~~
a - b = 5 and ab = 14 ⇒ a = 7 and b = 2
a³ - b³ = 5(a² + 14 + b²)
a³ - b³ = 5(49 + 14 + 4) = 335
a³ - b³ = 335
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