Jawapan

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2016-03-11T11:18:03+08:00
^2 bermaksud kuasa dua x^2=(x-2)^2 + (x-1)^2 x^2=(x-2)(x-2)+(x-1)(x-1) x^2=2x^2 - 6x^2 + 5 0 = (x-5)(x-1) x= 5 x= 1
x=5
mana datang 2x^2-6x^2+5 tu?????