Question

if a + b = 7 and a b = to 10 find a - b​

Answer 1

a+b =7

5 +2 =7

ab =10

5*2=10

a-b = ?

5-2=3

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Answer 2

Step-by-step explanation:

a+b=7

ab=10. (gIven). (a²+b²)=29

(a-b)²=a²+b²-2ab

(a-b)²=29-20

(a-b)²=9

a-b =3

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