Question

a+b =10 and ab=21 then a-b =​

Answer 1

Answer:

a+b = 10 and ab = 21

a³+b³ = (a+b)³ - 3a²b-3ab²

→ (10)³ - 3ab(a+b)

→ 10³ - 3(21)(10)

→ 1000-630

→ 370

Plz mark as brainliest answer!!

Answer 2

Answer:

(a+b)ka square =(a_b)ka square +4ab

10ka square = (a_b)ka square +4×21

100=(a_b)ka square +84

100_84=(a_b)ka square

36 =(a_b)ka square

6 =a_b