Can anyone solve this and explain to me? I'm stuck :(
i don't understand
I have tried dividing it into a triangle but it doesn't work.​

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls