Question

Resolva as do 2 grau em R. a)3×elevado2 = 16-2×

Answer 1

3x² +2x -16 = 0

a = 3  b = 2 c= -16

formula de bhaskara

Δ = b² -4×a×c

Δ = 2² - 4×3×(-16)

Δ = 196

x = (-b ± √Δ) / 2a

x1 = ( -2 - √196) / 2×3

x1 = - 16 / 6

x² = -2,66

x² = ( -2 + √196) / 2×3

x² = 12 / 6

x² = 2