A license plate in a state has three letters A-Z and 4 digits 0-9 except the first digit cannot be 0. If the letters and digits can be repeated how many different license plate combinations are possible?

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

good luck!

cutie~