Question

O valor numérico de x é?

Answer 1

a=1

b=-7

c=10

x=-(-7)+-\/(-7)²-4(1)(10)/2(1)

x=7+-\/49-40/2

x=7+-3/2

x'=7+3/2

x'=10/2

x'=5

x"=7-3/2

x"=4/2

x"=2

x=2 ou x=5