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3 - a = 2
a = 1
-4 - b = -4
b = 0
2 - c = 3
c = -1
7 - d = -1
d = 8
Matriks x adalah:
5).
det A = det B. Sehingga diperoleh:
-->> 2x.x+3 - 9.5 = 5.3x - 13.4
-->> 2x²+6x-45 = 15x - 52
-->> 2x²-9x+7 = 0
-->> (2x-7)(x-1) = 0
x = 7/2 atau x = 1
Semoga suksess ^^