Question

Find the value of a and b when x=10

Answer 1

a=250 b=10

Explanation:

x = 10

a=5(10^2) / 2

a=5(100) / 2

a = 500/2

a=250

b= 2(10^2)(10-5)/ (10(10))

b=2(100)(5)/100

b=200(5)/(100)

b=1000/100

b=10

Answer 2

Evaluating

Just substitute 10 for x. The calculations for a and b are below.

a

`a=(5x^2)/(2)`

`a=(5(10)^2)/(2)`

`a=(5\cdot100)/(2)`

`a=(500)/(2)`

`a=250`

b

`b=(2x^2(x-5))/(10x)`

`b=(2(10)^2(10-5))/(10*10)`

`b=(2*100*5)/(100)`

`b=(200*5)/(100)`

`b=(1000)/(100)`

`b=10`

So, a = 250 and b = 10.