Question

1. If a + b = 9 and ab = 20, then a² + b2 will be​

Answer 1

Answer:

41

Step-by-step explanation:

a^2+b^2=(a+b)^2-2ab

so,

a^2+b^2=(9^2)-2*20

= 81-40

= 41

Answer 2

Answer:41

Step-by-step explanation:firstly ,look for a number that when added will give you 9 and when multiplied will give you 20. The numbers therefore are 5and 4 .if u put this in the equation it will definitely give you the above answers.