Solve by square root method: 2x^2 - 10 = 132

2x^2 - 10 = 132

add 10 to each side

2x^2 = 142

divide by 2

x^2 = 71

take the square root of each side

x = +- sqrt (71)

x =sqrt(71), -sqrt(71)

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116