Edexcel F1 2022 January — Question 1

Exam BoardEdexcel
ModuleF1 (Further Pure Mathematics 1)
Year2022
SessionJanuary
TopicMatrices

1. $$\mathbf { M } = \left( \begin{array} { r r } 3 x & 7
4 x + 1 & 2 - x \end{array} \right)$$ Find the range of values of \(x\) for which the determinant of the matrix \(\mathbf { M }\) is positive.
VILV SIHI NI IIII M I ON OC
WIHW SIHI NI IIIIM I ON OC
WARV SIHI NI IIII M I ON OC