Question

resolva as equações a)x2-8x+25=0​

Answer 1

x²-8x+25=0

Δ=b²-4ac

Δ=(-8)²-4.1.25

Δ=64-100

Δ=-36

x=-b+-✓Δ/2a

x=8+-6i/2

x'=8+6i/2

x'=2(4+3i)/2

x'=4+3i

x"=(8-6i)/2

x"=2(4-3i)/2

x"=4-3i