Question

Escreva as equações na forma geral e resolva : a) X² + 3 = 4X b) -20= -X - X²

Answer 1

X2-4x+3= 0
X'= 3
x''= 1

-X2-x+20=0 (-1) -> x2 +x -20=0
X'= 4
X''= -5