Answer:
Explanation:
The answer is C.
He may have made a contribution to D. There are over 360 different proofs for the Pythagorean theorem but that would not be his major contribution.
B may also be true, but if it is, he is not noted for it.
A not the Chinese system.
His main contribution was in the solution of equations like
y = 2x^2 + 20x + 12 = 2(x^2 + 10x + 25) - 12 = 2(x + 5) - 62 (completing the square) which we teach in the lower grades now, but when you learn something about the number system used, you realize that any contribution is remarkable.
<span>John Adams was able to convince the delegates to sign the
Declaration of Independence through a speech he gave. In that speech, he firmly believed that the
colonies should be free and that he was willing to give his life for it to come
true. Even if it would be costly in both
money and lives, it is worth fighting for.
He further stated that despite risks, it will pave the way to bright
future and that their descendants will preserve it.</span>
Not entirely sure what you mean by this unless you mean specific interpretations of the constitution, which is considered judicial review which was established in Marbury v Madison, also known as an informal amendment.
<em>A non-Jewish person is called a Gentile. Also called "goy"</em>