16(x-1)^2=225因式分解法,

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16(x-1)^2=225因式分解法,
16(x-1)^2=225因式分解法,

16(x-1)^2=225因式分解法,
16(x-1)^2=225
[4(x-1)]^2 -225 =0
(4x-4)^2 - 15^2 =0
(4x-4+15)(4x-4-15) =0
(4x+11)(4x-19) =0
x = -11/4,x = 19/4
 
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16(x-1)²=225
16(x-1)²-225=0
[4(x-1)]²-15²=0
[4(x-1)+15][4(x-1)-15]=0
(4x+11)(4x-19)=0
x1=-11/4,x2=19/4