Question

$x {}^{2} - 8x = 3$
Vă rog!

Answer 1

x²-8x=3
x²-8x-3=0
Δ=24+4*3=36⇒√Δ=6
x₁=(8+6)/2=7
x₂=(8-6)/2=1
S:x∈{1,7}