if
a+b+c-9 and ab + bc+ca=40, find
a ²+b+ c²
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0
Answer:
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Answered by
0
Answer:
1
Step-by-step explanation:
a+b+c=9
(a+b+c)^2=9^2
a2 +b2 +c2 +2(ab + bc+ca) = 81
a ²+b+ c² + 2(40) = 81
a ²+b+ c² = 81 - 80 =1
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