3x^2 – 5x – 4= 0
Is there any easy and faster way to do these

Write the equations in logarithmic form 9^4=6,561

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)

Easy points look at the picture and solve. you so