Question

Tolong bantu no. 35 ya

Answer 1

Det = a . d - b . c
3 = x (x - 2) - 5 . 1
3 = x^2 - 2x - 5
0 = x^2 - 2x - 8
0 = (x + 2)(x - 4)

x + 2 = 0 ---> x1 = -2
x - 4 = 0 ---> x2 = 4

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