Question

4x elevado a 2 menos 4x menos 3 igual a 0

Answer 1

4x²-4x-3=0

Δ=b²-4ac
Δ=4²-4.4(-3)
Δ=16-16(-3)
Δ=16+48
Δ=64

x= -b±√Δ/2.a

x=-(-4)±√64/2.4

x=4±8/8

x¹=12/8 = 3/2

x²= -4/8 = -1/2

Espero ter ajudado :)