Question

If a+b=7 and ab=10
(a>b) find a-b and
a3_b²​

Answer 1

Answer:

a + b = 7 ===> a = 7 - b

ab = 10 ====> (7 - b )b = 10 ====> -b^2 + 7b = 10

On fractorisation b = -5 or -2

Then a = 12 or 9

Step-by-step explanation:

Then a - b = ?

If a = 12 and b = -5 If a = 9 and b = -2

a - b = 17. a - b = 11

a ^3 - b ^2 = 1703. a ^3 - b^2 = 725