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VIKASH MEENA

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· 1 Months ago

detail explain

Question:
If a + b + c = 7, ab + bc + ca = 12. What is the value of (a3 + b3 + c3)?
Options:
A) 121
B) 96
C) 204
D) 91
Solution:
Ans: (d)

put c=0

a+b=7 and ab=12 assume a=4,b=3

(a3 + b3 + c3)=

(43 + 33 + 03)=91

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