下列从左到右的变形中,是因式分解的有_____________.
①24x
y="4x" •6xy,②(x+5)(x-5)= x
-25,③ x
+2x-3=(x+3)(x-1)
④9x
-6x+1=3x(3x-2)+1,⑤x
+1=x(x+
),⑥3x
+27x
="3" x
( x
+9)
下列从左到右的变形中,是因式分解的有_____________.
①24x
y="4x" •6xy,②(x+5)(x-5)= x
-25,③ x
+2x-3=(x+3)(x-1)
④9x
-6x+1=3x(3x-2)+1,⑤x
+1=x(x+
),⑥3x
+27x
="3" x
( x
+9)
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