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Q: How do you solve by Cramer's rule 2x-y 5 x-2y 1?

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i don't get that if it is 2xy +8 or 8 + 2xy then you can't solve or simplify it any further if it were 8 x 2y then you time the 8 by the 2 to get 16y

8-x2y 8-2xy 2xy-8

(2x)ysquared

It is -2y + x2y - 8, which is an expression that cannot be simplified further, not can it be evaluated.

Times the numbers together, 4 x 2 = 8 Times the independent variables, y x y = y2 answer = 8y2

You will get nonsense. You cannot plug x2y + 4 into anything!

4 (apples) plus 3 (apples) = 7 (apples). 4 (cows) + 3 (cows) = 7 (cows) 4 (x2y) + 3 (x2y) = 7 (x2y)

xy

xy

Do the multiplication, then take the square root. After the multiplication, you get 28x4y2. The square root of 28 is 2 times the root of 7, the square root of x4 is x2, and the root of y2 is y. So, the final result is 2 times square root of 7, times x2y.

The GCF is xy

6 ~

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