Answer:
[tex]x = \frac{-9}{8} , \frac{-10}{7} , \frac{10}{7}[/tex]
Step-by-step explanation:
8x+9=0
8x=-9
[tex]x = \frac{-9}{8}[/tex]
or
[tex]49x^{2}-100 = 0[/tex]
[tex](7x)^{2} -10^{2} =0[/tex],
[tex](7x+10)(7x-10)=0[/tex]
[tex]7x+10=0, 7x-10=0[/tex]
[tex]7x=-10, 7x=10[/tex]
[tex]x=-\frac{-10}{7}[/tex], [tex]x = \frac{10}{7}[/tex]
