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lana66690 [7]
3 years ago
9

What is the solution to the equation 5a^2 - 44 = 81

Mathematics
2 answers:
AveGali [126]3 years ago
7 0

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

pickupchik [31]3 years ago
7 0

Answer:

Option c) is correct

ie, a=plus minus 5 or a=\pm 5

Step-by-step explanation:

Given equation is 5a^2-44=81

To find the solution of the given equation we have to solve the equation

5a^2-44=81

5a^2=81+44

Now applying the algebraic sum to the terms on the right hand side of the equation

5a^2=125

a^2=\frac{125}{5}

Now applying the division rule

a^2=25

Therefore a=\pm 5

Therefore option c) is correct

ie, a=\pm 5.

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