Question

CALCULE AS RAIZES DA EQUAÇÃO ...
2X²-32=0
4x²-20=0

Answer 1

2x² - 32 = 0
Δ = b² - 4*a*c
Δ = 0² - 4* 2 *(-32)
Δ = 256

x1= (-0 +√256)/ 2 * 2
x1 = 16/4
x1 = 4
x2 = (-0 -√256)/ 2 * 2
x2 = -16/4
x2 = -4



4x² - 20= 0
Δ = b² - 4*a*c
Δ = 0² - 4* 4 *(-20)
Δ = 320

x1= (-0 +√320)/ 2 * 4
x1 = √320/8
x2 = (-0 -√320)/ 2 * 4
x2 = -√320/8

√320 (Tem que fatorar )