Question

If a²+b²=74 and ab=10 find the value of (a-b)²​

Answer 1

Answer:

54

Step-by-step explanation:

(a -b)²

= a² -2ab +b²

= a² +b² -2ab

= 74 -2(10) (subst. value of a²+b² and ab)

= 74 -20

= 54