Question

if 2a - b : 2a + b = 1 : 2, find i) a : b ii) ( a^2 - b^2 : a^2 + b^2 )

Answer 1

Answer:

a=2

b=−2

∴2a2b+2ab2+ab

=2(2)2(−2)+2(2)(−2)2+(2)(−2)

=−16+16−4

=−4