Mathematics
Senior High
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請問要如何用乘法公式解這題,目前只學過平方差,和的平方,差的平方,立方和,立方查,和的立方,差的立方,三數的平方而已,謝謝
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020060146w
PENTEL CO.,LTD. Made in Japan
PD105T-C
單元1 實數
演練 14
利用乘法公式,因式分解9x²+5x²+1。
解
【配合課本例8】
例題15
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