Suppose two trains leave corpus christi, texas, at the same time traveling in opposite directions. one train travels 10 mph faster than the other. in 2.5 hours, the trains are 205 miles apart. write an equation where x is the speed of the faster train.

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

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step-by-step explanation:

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