Answer:
Step-by-step explanation:
5a^2 - 44 = 81
5a^2 = 81 + 44 {add 44 both the sides}
5a^2 = 125
a^2 = 125/5 {divide both sides by 5}
a^2 = 25
a^2 = 5*5
a = ±5
Answer:
Option c) is correct
ie, a=plus minus 5 or [tex]a=\pm 5[/tex]
Step-by-step explanation:
Given equation is [tex]5a^2-44=81[/tex]
To find the solution of the given equation we have to solve the equation
[tex]5a^2-44=81[/tex]
[tex]5a^2=81+44[/tex]
Now applying the algebraic sum to the terms on the right hand side of the equation
[tex]5a^2=125[/tex]
[tex]a^2=\frac{125}{5}[/tex]
Now applying the division rule
[tex]a^2=25[/tex]
Therefore [tex]a=\pm 5[/tex]
Therefore option c) is correct
ie, [tex]a=\pm 5[/tex].
