Question

If a-b= 1, a²+b² = 13 find ab

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Answer 1

ANSWERGiven, a + b = 5 and a 2 +b 2 =13On squaring a + b = 5 both sides, we get(a+b) 2 =(5) 2 a 2 +b 2 +2ab=2513+2ab=25⇒2ab=25−13=12⇒ab=12/2=6∴ab=6

Answer 2

Answer:

ANSWER

Given, 

a + b  = 5 and a2+b2=13

On squaring a + b = 5 both sides, we get

(a+b)2=(5)2

a2+b2+2ab=25

13+2ab=25⇒2ab=25−13=12

⇒ab=12/2=6

Step-by-step explanation:

I think You have two id..