Question

2. If a + b = 3 and ab = 2, then evaluate a3 +b3.
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Answer 1

Answer:

answer is 9

Step-by-step explanation:

this is the solution of qurstion

Answer 2

Answer:

9

Step by step explanation:

a+b=3

ab=2

Solving through SUBSTITUTION method

:- a=3-b

Putting this equation in:-

ab=2

:- (3-b)b=2

:- b^2-3b+2=0

:- (b-1)(b-2)=0

:- b=1,2

:- a=2,1

:- a3+b3= (2×3)+(1×3) or (1×3)+(2×3)

= 6+3

=9

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