Question

×-5×-36=0.
a=1
b=5.
c=36

Answer 1

x^2-5x-36=0

Δ=25+144
Δ=169
x=-b+/-√Δ/2a

x=5+/-√144/2

x'=5+12/2
x'=17/2
x"=5-12/2
x"=-7/2