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6x^2=84, x^2=14, root(14) = x
x = Plus or minus square root of 14, or 3.741...
28*21 equals 84
112
84 - 7 = 77
84 inches = 7 feet
84
63-84 equals = -21
4 times 21 equals 84.
13,440 divided by 160 equals 84.
84 divided by 1 is equal to 84.
28x3=84
186
264