Question

If a+b= 4 ab =3 find 1/b^2+1/a^2

Answer 1

Step-by-step explanation:

=> a+b = 4

=> b = 4-a

=> ab = 3

=> a(4-a) = 3

=> a²-4a+3=0

=> a² - 3a - a + 3 = 0

=> a(a-3)-1(a-3)=0

=> a = 1 or a = 3

=> a = 1 => b = 3

=> a=3 => b = 1

=> 1/a² + 1/b² = 1/1² + 1/3²

=> 1 + 1/9

=> 10/9

Answer 2

here is your answer hope it is thankful