Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Evaluate the limit:
`lim_(x->4) \ (-5x+20)/(x^2-7x+12) = `
Enter DNE for Does Not Exist, oo for Infinity -5