1 Answer

Maju · Answer 1 · 2023-01-20T08:15:54+0000

Simplify the expression inside the [ ] symbols using the law of signs:

$\lbrack-2-(+3)\rbrack=\lbrack-2-3\rbrack=\lbrack-5\rbrack$

Therefore:

$25-\lbrack-2-(+3)\rbrack^2=25-\lbrack-5\rbrack^2$

Notice that (-5)^2=+25. Then:

$25-\lbrack-5\rbrack^2=25-(+25)$

Then, there are two expression which are equivalent to the given expression:

Option a)

Option d)

$25-\lbrack-5\rbrack^2$

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