Question

Sendo f(x) = 2x2 – 5x – 3, calcule x de modo que y = 0 ????

Answer 1

f(x) = 2x2 – 5x – 3

$2x\cdot \:2-5x-3:\quad -x-3\\2x\cdot \:2-5x-3\\\\4x-5x-3\\\\-x-3$

espero ter ajudado