Evaluate the determinants:

$$\begin{bmatrix}x &-7 \\[0.3em] x & 5x +1 \\[0.3em] \end{bmatrix}$$

Asked by Aaryan | 1 year ago |  66

##### Solution :-

|A| = x (5x + 1) – (–7) x

|A| = 5x2 + 8x

Answered by Sakshi | 1 year ago

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