Question

(3x²-5x+2)-(x²-6x+2)
Com o cálculo!

Answer 1

(3x²-5x+2)-(x²-6x+2) =

3x² -5x +2 -x² +6x -2 = 0

3x² -x² -5x +6x +2 -2 = 0

\ / \ /

2x² +x = 0

a = 2 b = 1 c = 0

Δ = b² - 4.a.c

Δ = 1² - 4.2.0

Δ = 1 - 0

Δ = 1

x = -b +- √Δ / 2a

x = -1 +- √1 / 2.2

x = -1 +- 1 / 4

x' = 1 +1 / 4 x'' = 1 - 1 / 4

x' = 2 / 4 x'' = 0/4

x' = 1/2 x'' = 0