(x²-9)÷(x²-6x+9)
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(x²-9)÷(x²-6x+9)(x²-9)÷(x²-6x+9)(x²-9)÷(x²-6x+9)(x²-9)/(x²-6
(x²-9)÷(x²-6x+9)
(x²-9)÷(x²-6x+9)
(x²-9)÷(x²-6x+9)
(x²-9)/(x²-6x+9)
=[(x+3)(x-3)]/(x-3)²
=(x+3)/(x-3)
明白请采纳,
有新问题请求助,