0
Anonymous
x2+12x-13=0
The factor of x2+12x-13 is: (x+13)(x-1)
So: x+13 = 0 or x-1 = 0
The answer is: x=-13 or x=1
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It is -13.
6
(-3, -5)
13...... 9 plus 5 equals 14...... 14 minus 1 equals 13
-7+x=13x the -7=12x and x =-7/12