The equasion has only one solution.
A car travelled 216km at an average speed of 48km/h.On the return journey the average speed increased to 72km/h.Calculate the av
erage speed,in km/h for the whole journey
1 answer:
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Answer:
Step-by-step explanation:
2x² -x - 6 = 2x² - 4x + 3x - 3*2
= 2x*(x - 2) + 3*(x - 2)
= (x-2)(2x + 3)
A = 2x² -x - 6
A = (x - 2)(2x + 3)
length*width = (x - 2)(2x + 3)
length * (2x +3) = (x - 2)(2x + 3)
length = x - 2
First number: 57
Second number: 513
Third number: 157
Second number: 513
Third number: 157