these are three question of
polynomial
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Answers
Answered by
0
Answer:
55
Step-by-step explanation:
a + b +c = 9
ab + bc + ca = 26
a²+ b² + c² ?
(a+b+c)² = a²+b²+c² +ab + bc +ca
(9)² = a²+b²+c²+26
81 -26 = a²+b²+c²
55 = a²+b²+c².
Answered by
1
Answer:
a+b+c =9
ab+bc+ac=26
a²+b²+c² = (a+b+c)²-2(ab+bc+ac)
=(9)²-2×26
=81- 52
= 29cm
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