Pythagoras (c. 569 BC - 475 BC) was a philosopher and mathematician from Ancient Greece who stood out for the advances he made in branches of mathematics such as arithmetic, geometry and pure mathematics. None of his works are known, however, his work is known thanks to his disciples, the Pythagoreans who formed the Pythagorean society, a religious community founded by Pitagoras in which subjects such as politics, medicine, philosophy, ethics, cosmology were studied. So, the correct answer is B. Pythagoras. So, the correct answer is B. Pythagoras.
9 - 6 + 4 × 13 First, simplify 4 × 13 to get 52. / Your problem should look like: 9 - 6 + 52 Second, simplify. Subtract 9 - 6 then add 52 onto that. / Your problem should look like: 55