Question

y​x9-yx2=41+22

 

Answer 1

qua de

Answer 2

y x 9 - y x 2 = 41 + 22

y x 9 - y x 2 = 63

y x ( 9 - 2 ) = 63

y x 7 = 63

y = 63 : 7

y = 9 

Answer 3

qua de

Answer 4

ui doi a

Answer 5

cau nay de ma

Answer 6

y​x9-yx2=41+22

=>yx9-yx2=63

=>yx9-2=63

=>y=63:7

=>y=9

Vậy y =9

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