Question

Resolva a equaçao
10x²-160=0

Answer 1

10x²-160 = 0

10x² = 160 

x² = 16

x₁ = +√16 = 4

x₂ = -√16 = -4

Answer 2

vamos lá...

$10x^2-160=0 \\ \\ 10x^2=160 \\ \\ x^2=160\div10 \\ \\ x^2=16 \\ \\ x=\pm \sqrt{16} \\ \\ x=\pm4 \\ \\ S=\{-4,+4\}$