Question

Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation.
r - 4 = 0 ( 4, -4, 8, 0)

Answer 1

Let us try all the values -

- 4 - 4 = 0

-8 ≠ 0

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4 - 4 = 0

0 = 0

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8 - 4 = 0

4 ≠ 0

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0 - 4 = 0

-4 ≠ 0

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∴ 4 is the right answer.

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