Answer:
i hope this helps
Step-by-step explanation:
2[tex]x^{2}[/tex] -16=0
+16 +16
2[tex]x^{2}[/tex] =16
÷2 ÷2
[tex]x^{2}[/tex] = 8
[tex]\sqrt{x^{2} }[/tex]= [tex]\sqrt{8}[/tex]
x= [tex]\sqrt{8}[/tex]
-5[tex]x^{2}[/tex] +9=0
-9 -9
-5[tex]x^{2}[/tex]=-9
÷-5 ÷-5
[tex]x^{2}[/tex] =1.8
[tex]\sqrt{x^{2} }[/tex]= [tex]\sqrt{1.8}[/tex]
x= [tex]\sqrt{1.8}[/tex]
6[tex]x^{2}[/tex] -15=27
+15 +15
6[tex]x^{2}[/tex] =42
÷6 ÷6
[tex]x^{2}[/tex] =7
[tex]\sqrt{x^{2} }[/tex]= [tex]\sqrt{7}[/tex]
x=[tex]\sqrt{7}[/tex]
