Question

Please solve with steps:-

If ab + bc + ca = 27 and a2 + b2 + c2 = 90, find the value of a + b + c.​

Answer 1

Answer:

90+2 (ab+bc+ ca)

=90+2×27

= 90 + 54

= 144

( a+b+c ) = 144

a + b+ c = square root = 144

a+b+c = 12

Step-by-step explanation:

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