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Find the value of x if the determinant of the matrix is equal to 20.

Mathematics

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Answer

د xx د قیمت موندلو لپاره، موږ باید د میتریکس ټاکونکی (determinant) محاسبه کړو او 20 ته یې مساوي کړو.

Step-by-step solution

2 steps

  1. د ټاکونکي معادله ولیکئ.

    د ورکړل شوي میتریکس ټاکونکی په لاندې ډول دی:

    ∣3492x2−12x−47x−73x+6∣=20\begin{vmatrix} 3 & 4 & 9 \\ 2 & x^2-1 & 2x-4 \\ 7 & x-7 & 3x+6 \end{vmatrix} = 20

  2. ټاکونکی پراخ کړئ.

    موږ د لومړي قطار په اوږدو کې د کوفاک

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