Question

If a +6=7 and at = 12 find the value of a3 +b3​

Answer 1

Answer:

We know that a+b=6 and ab=8. Using (a+b)

2

=a

2

+b

2

+2ab, we can find a

2

+b

2

by

a

2

+b

2

=(a+b)

2

−2ab=6

2

−2×8=36−16=20

Now we use

a

3

+b

3

=(a+b)(a

2

+b

2

−ab)=6×(20−8)=6×12=72

Answer 2

Step-by-step explanation:

what the hell is this question?!

doesn't makes any sense