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What is 4x^2y^-1 - 2x^-3y of x=5 and y=-2 ?

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  • What is 4x^2y^-1 - 2x^-3y of x=5 and y=-2 ?


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User: 2x 3y = 6 5x 2y = 4 Which of the following equations could be the result of multiplication and addition to eliminate a variable in the system of ...
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Positive: 38 %
4. 2x+3y=7, x=1-4y --- x=5, y=-1 5. 2x+3y=6, x-3y=-15 - x=-3, y=4 6. 7x-5y=4, y=3x-4 --- x= 2, y=2 7. 2y-5x=-1, x ... 10. x+y=4, 3x+4y=10 - x=6, y=-2
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Positive: 35 %

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... {x/4-1/4 +2=y {y/3-3/3 +5=x 16. {4x-3y=-3 {2x+3y=21 17. {x+2y=9 {4x-2y=-4 18. {3x+y=1 {-3x+y=13 19. {-2x-y ... \left \{ {{y=2} \atop {x=2}} \right:
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Positive: 38 %
若X=1,Y=2是方程组2X—Y=4P,KX+2Y=1的解,求P与KDE 值X=1 Y ... 4*X=5 *(27-X) 4*X/5=27 ... 2012-06-09 方程组4x-2y=1,kx+y=3/2 ...
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Positive: 33 %
Solve the following system of equations by the substitution method.x ... y - y - 2 = 0 Substitute the value of x from equation 1. 0 - 2 = 0 ...
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Positive: 19 %
... Find the equation of the circle with centre (–7, –3) and of radius 10. 2 ... and concentric with x + y2 + 4x – 2y + 1 = 0 12. ... (x + 5)2 + (y ...
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Positive: 10 %

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