2x^2-20x=x^2-192x 2
−20x=x
2
−192, x, squared, minus, 20, x, equals, x, squared, minus, 19

Rewrite the equation by completing the square.

rewrite: (x-10)^2=81

solution: x=10±9

Step-by-step explanation:

took the quiz.

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

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