Jawabanmu

2014-02-25T21:28:28+07:00
-8x^ + 4^ + 4 = ( -4x+4 ) (2x+1)
catatatan : ^ = pangkat 2
2014-02-25T23:34:14+07:00
√(4x² - 8x + 4) = √4(x² - 2x + 1) = √4(x - 1)² = 2(x - 1) = 2x - 2