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Give the domain of `k(x) = (7x^2+6x)/(4x-9)` in interval notation.
To find the domain of the function given, identify values of `x` that would make the denominator zero, as these values are not included in the domain.
Box 1: Enter your answer using interval notation. Example: [2,5)
Use U for union to combine intervals. Example: (-oo,2] U [4,oo)
Enter each value as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers
Enter DNE for an empty set. Use oo to enter Infinity.
`(-oo,9/4)uu(9/4,oo)`