Question

If a + b = 3 and ab = 2, find the values of (i) a 2 + b 2 (ii) a – b (iii) a 2 - b 2 (iv) a 3 + b 3

Answer 1

Answer:

Step-by-step explanation:

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

1.) =>(3)^2=a^2+b^2+2*2 => 9=a^2+b^2+4

=>9-4=a^2+b^2

=>5=a^2+b^2