Question

if the value of root 2 is 1.41, find the value of 3 root 32- 2 root 50 +4 root 128- 20 root 18

Answer 1

Root 2 = 1.41

3 root 32 - 2 root 50 + 4 root 128 - 20 root 18

= 3*4*root 2 - 2*5*root 2 + 4*8*root 2 - 20*3*root 2

= 12*root 2 - 10*root 2 + 32*root 2 - 60*root 2

= (12-10+32-60)*1.41

= -(26)*1.41

= -36.66