Question

Evaluvate 40 divided by 2 root 10+ root 20+ root 40-2 root 5

Answer 1

40 / (2 root 10) + root 20 + root 40- 2 root 5
=[40/(root 4x10)] + root 20 + root 40 - root (4x5)
=[ root(40x40) / root 40 ] + root 20 + root 40 - root 20
= root 40 + root 20 + root 40 - root 20
= root 40 + root 40
= 2 root 40
= 2 root 4×10
= 4 root 10