Question

If a²+b² =10 and a-b=3 find a-b and a+b​

Answer 1

Step-by-step explanation:

(a-b)2 = a2+b2-2ab

(3)2 =10-2ab

6= 10-2ab

2ab= 4

ab = 2......................(I)

◆ (a+b)2 = a2+b2+2ab

(a+b)2 = 10+4

(a+b) = underroot 14.

(a-b)2 = a2+b2-2ab

(a-b)2 = 10-4

(a-b) = underroot 6.

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