Answer:
where x1=-3.71 and x2=1.21
Step-by-step explanation:
first= 2x+5x-9=0, a=2,b=5,c=-9, x=
[tex] \sqrt{ {5 }^{2} } - 4 \times 2( - 9) \: over4[/tex]
second x=
[tex] \sqrt[ - 5 + ]{25 + 72} over4[/tex]
x=
[tex] \sqrt[ - 5 +4 ]{97} [/tex]
[tex] \sqrt[ - 5 - 4]{97} [/tex]
