Question

y²-7y+10=0 Com formula de Bháskara, AJUDEM

Answer 1

Δ=(-7)²-4×1×10

Δ=49+(-4)×10

Δ=49+(-40)

Δ=9

x'=-(-7)+√9/(2.1)

x'=7+√9/2

x'=7+3/2

x'=10/2

x'=5

x''=-(-7)-√9/(2.1)

x''=7-√9/2

x''=7-3/2

x''=4/2

x''=2

S= 5 e 2