Question

solve
(8x - 4y ) (9x² - 4z )​

Answer 1

(8x - 4y ) (9x² - 4z )

8x (9x² - 4z )-4y (9x² - 4z )

7x^3-32xz -36x²y +16zy

Ans is 7x^3-32xz -36x²y +16zy

Answer 2

Answer:

Step-by-step explanation:

8x+4y=84

2x+y=21........(1) &9x−9y=54

x−y=6..........(2)

Adding (1) & (2), we get

2x+y+x−y=21+63

x=27

x=27/3

x=9

setting

x=9 in (1), we get 2(9)+y=21

y=21−18

y=3

hence the solution of given equations is

x=9

y=3

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