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If the Value of Deteminant (3, 4),(-2, X) is 23, Then Find the Value Of X. - Algebra

Sum

If the value of determinants `|(3, 4),(-2, "x")|` is 23, then find the value of` x.

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Solution

`|(3, 4),(-2, "x")|` = 23

3x - (- 8) = 23

3x + 8 = 23

3x = 23 - 8

∴ 3x =15

∴ x = `15/3`

∴x = 5

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