Answer:
x² -6x = -13
Step-by-step explanation:
Divide the equation by 8, the current value of "a".
... (8x² -48x)/8 = -104/8
... x² -6x = -13
X*2-6x+_=-13+ _
I don't know it's very hart
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if the answer is the value of x then it would be 13.5
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