Can you solve this in a good way please

Mathematics

1 answer:

IRINA_888 [86]3 years ago

8 0

Answer:

5/2 x^2y^2

Step-by-step explanation:

( x^2 - 3/5y^2)^2 + (3/4 x^2 + 4/5 y^2)^2 - (5/4x^2 - y^2)^2

= x^4 - 6/5x^2y^2 + 9/25y^4 + 9/16x^4 + 6/5x^2y^2 + 16/25y^4 - ( 25/16x^4

- 5/2x^2y^2 + y^4)

Distributing the negative over the parentheses:-

= x^4 - 6/5x^2y^2 + 9/25y^4 + 9/16x^4 + 6/5x^2y^2 + 16/25y^4

- 25/16x^4

+ 5/2x^2y^2 - y^4

Bringing like terms together

x^4 + 9/16x^4 - 25/16x^4 - 6/5x^2y^2 + 6/5x^2y^2 + 5/2x^2y^2 + 16/25y^4 + 9/25y^4

- y^4

Adding like terms:-

= 5/2 x^2y^2 Answer

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Solve the system by elimination 4x+3y=-5 -x+3y=-10

Sedaia [141]

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Solve for x in the equation above

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Substitute x = 1 into any of the two equations above

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4 * 1 + 3y = -5

Solve for y in the equation above

y = -3

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Bezzdna [24]

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Because,
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This is my first time answering questions so if I got something wrong ask or something hope this helps :)