If a 2 b 2 9 and ab 4 July 8, 2019 16 32 64 128 If a b 2 9 and ab 2 49 what is the value of a 2 b 2 If a b 9 and ab 4 find the value of a 2 b 2 If a+b=9 ab=4 find the value of a2+b2 If (a+b)^2=9 and (a-b)^2=49 what is the value of a^2+b^2