First slide
Introduction to Determinants
Question

Let a + b + c = s and s+cabcs+abcas+b=532, then the value of s is __________ .

Moderate
Solution

Given that

s+cabcs+abcas+b=532

Applying C1C1+C2+C3, we get

(a+b+c+s)1ab1s+ab1as+b=532

 2s0s00ss1as+b=532 2s3=532

 s3=216

s = 6

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