Question

If a – b = 2 , ab = 3 . Find a2 + b2 and a3 – b3

Answer 1

Answer:

Given:-

a-b=2

ab=3

we know the identity:

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

2^2=a^2+b^2-2*3

a^2+b^2=10

(a-b)^3=a^3-b^3-3ab(a-b)

8=a^3-b^3-3*3*2

a^3-b^3=26

PLEASE MARK AS BRAINLIEST.

Answer 2

Step-by-step explanation:

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

2^2=a^2+b^2-2×3

4+6=a^2+b^2=10

a^3-b^3=(a-b)(a^2+b^2+ab)

(2)(10+3)=a^3-b^3=26