Question

Which branch of mathematics, that uses letters as symbols when calculating, takes its name from the Arabic for 'restoring of broken parts' ?
Algebra
Trigonometry
Arithmetic
Number theory

Answer 1

$\tt\blue{algebra}$

Answer 2

Algebra is the branch of mathematics, that uses letters as symbols when calculating, takes its name from the Arabic for 'restoring of broken parts' .

Algebra is the branch of mathematics that deals with mathematical symbols and alphabets when calculating equations.

The word Algebra comes from the Arabic word "al-jabr" which means 'restoring of broken parts'. It is a broad part of the mathematics subject.