Question

menos x ao quadrado + 3x​

Answer 1

X²-3X=0

delta = b²-4.a.c

delta = -3²-4.1.0

delta = 9

x = -b+- raiz de delta

-------------------------

2.a

x = -(-3)+- raiz de 9

-----------------------

2.1

x = 3+- 3

---------

2

x' = 3+3

------- = 6

2 ---- = 3

2

x" = 3-3

------- = 0

2 ----- = 0

2

x' = 3

x" = 0