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The sixth question on page 44 of the seventh grade of Friends of Mathematics, how to write it?
Since neither the square root nor the absolute value can be negative, it can be deduced.

(x+ 1/2)？ =0 then x=- 1/2.

| y- 1/4 | = 0, then y= 1/4.

- 1/8- 1/32+ 1/8+ 1/32- 1/ 16- 1 =- 17/65438.

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