若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值
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若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值答:x^m=9
若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值
若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值
若x^m=9,x^n=6,x^k=4,求x^m-2n+2k的值
答:
x^m=9,x^n=6,x^k=4,
所以:
x^(m-2n+2k)
=(x^m)÷[(x^n)^2]×[(x^k)^2]
=9÷6²×4²
=9×16÷36
=4
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