Question

Exoand square root^98=(100-2)^1/2​

Answer 1

(98)3

(100−2)3

∴(a−b)3=a3−b3−3a2b+3ab2

(100−2)3=(100)3−(2)3−3×(100)2×2+3×100×22

=1000000−3−60000+1200

=941192.