作业帮(x^2-1)^-6(x^2-1)+9=?a^3-36a=?
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(x^2-1)^-6(x^2-1)+9=?a^3-36a=?
(x^2-1)^-6(x^2-1)+9=?
a^3-36a=?
(x^2-1)^-6(x^2-1)+9=?a^3-36a=?
(x^2-1)^2-6(x^2-1)+9
=(x^2-1-3)^2
=(x^2-4)^2
=(x+2)^2(x-2)^2
a^3-36a
=a(a^2-36)
=a(a-6)(a+6)
（x²-1）²-6（x²-1）+9
=(x^2-1)^2-2*(x^2-1)^3+3^2
=[(x^2-1)-3]^2
=(x^2-2^2)^2
=(x+2)^2*(x-2)^2
(x^2-1)^2-6(x^2-1)+9
=(x^2-1-3)^2
=(x^2-4)^2
=(x+2)^2(x-2)^2
a^3-36a
=a(a^2-36)
=a(a-6)(a+6)
x^2-1)^2-6(x^2-1)+9
=(x^2-1-3)^2
=(x^2-4)^2
=(x+2)^2(x-2)^2
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
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x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)谁会解这道方程题
x/(x-2)+(x+9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)怎样解这道方程
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求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
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2x/x^2-9=x-1/x^2-6x+9-1/x+3
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
(x-2)(x2-6x-9)-x(x-5)(x-3)其中x= -1/3