Question

If a−b=13 and ab=28 then a^2+b^2=?

Answer 1

Answer:

(a square + b square)

a square +2*ab +( a +b)

if a+b =13and ab=28 then,

A must be 7 and B must be 4

so,clearly

(7 )^2 + 2 (7*4) + 7+4

49 + 76 + 13

= 138

Step-by-step explanation:

may this helps u