Tent. Numerus dari akar x²-4x+4
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berikan jawaban besrta caranya
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x²-4x+4
asalnya dari:
x²-2x-2x+4
(x²-2x)-(2x+4)
x(x-2)-2(x-2)
ada yang kembar berarti
(x-2)(x-2) = (x-2)²
(x-2)² = 0
x-2 =
x-2 = 0
x = 2