Question

find the value of a and b when x=10
a=5x^2/2
b=2x^2(x-5)/10x

Answer 1

a= 5x^2/2

a= (5×10)^2/2

a =50^2/2

a=2500/2

a= 1250

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

b= (2×10)^2(10-5)/10×10

b= 20^2(5)/100

b= 400×5/100

b= 20

Hence,

a= 1250 ; b=20

Hope this helps you out