if a²+b²+c²=280 and ab+bc+ ca =9/2, the find the value of (a+b+c )³
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Answer:
Step-by-step explanation:
now (a+b+c)³ = a²+b²+c² + 2ab + 2bc + 2ca
= 280 + 2 (ab + bc + ca)
= 280 + 2 x 9/2
= 280 + 9
= 289
sujitno1:
it is wrong it it the formula of (a+b+c)(a+b+c)
heyy
can u redo the sum and send me if possible
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0
0000000000000000000000000000000000028.5
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