Question

find the distance covered by a car with the speed (3x+2)km/hr in (5+3x)hrs.​

Answer 1

Answer:

distance covered = speed × time taken

thus the distance covered by the car with

speed= (3x+2)km/hr &

time taken =(5+3x) hrs

is,

$(3x + 2) \times(5 + 3x)km \\ = 15x + 10 + 9 {x}^{2} + 6x \\ = 9x^{2} + 21x + 10$

hence distance covered by the car is ,

9x²+21x+10