Q. Simplify the expression completely.−25+5−25−53−125+3−125Answer:
Simplify −25: First, let's simplify each term in the expression separately.−25 simplifies to −5 because the square root of 25 is 5.
Calculate 5−25: Next, 5−25 involves the square root of a negative number, which is not a real number. It is an imaginary number. The square root of −25 is 5i, where i is the imaginary unit. So, 5−25 simplifies to 5×5i=25i.
Evaluate −53−125: Then, −53−125 simplifies to −5×(−5) because the cube root of −125 is −5. So, −53−125 simplifies to −5×(−5)=25.
Find 3−125: Finally, 3−125 simplifies to −5 because the cube root of −125 is −5.
Combine simplified terms: Now, we combine all the simplified terms: −5+25i+25−5.
Combine real numbers: Combining the real numbers: −5+25−5=15.
Finalize imaginary term: The imaginary term remains as is because there are no other imaginary terms to combine it with.
Final simplified expression: The final simplified expression is 15+25i.