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x⁴-16x³+15x²+2x=5
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咨询记录 · 回答于2022-11-14
x⁴-16x³+15x²+2x=5
您好,(1)16(x-y)²-9(x+y)² ;=[4(x-y)+3(x+y)][4(x-y)-3(x+y)]=[4x-4y+3x+3y][4x-4y-3x-3y]=(7x-y)(x-7y)(2)m的四次方-n的四次方;=m^4-n^4=(m^2+n^2)(m^2-n^2)=(m^+n^2)(m+n)(m-n),仅供参考,谢谢