1.

There are two values of a which makes the determinant ∆=1-252a-1042a equal to 86. The sum of these two values is(a) 4(b) 5(c) −4(d) 9

Answer» There are two values of a which makes the determinant =1-252a-1042a equal to 86. The sum of these two values is



(a) 4

(b) 5

(c) −4

(d) 9


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