Question

If a+ b =10 and ab =16, find the value of a2 - ab + b2 and a2 + ab + b2

Answer 1

a=8

b=2. 8+2= 10, 8x2= 16

a^2 - ab + b^2

8x8 - 8x2 +2x2

64 - 16 + 4

64 - 20

44

a^2 + ab + b^2

8x8 + 8x2 +2x2

64 + 16 + 4

64 + 20

84