Math, asked by dana2007, 1 day ago

if a + b = 8 and ab = 7, then find a - b and a and b​

Answers

Answered by NITESH761
0

Answer:

a=1 and b=7

a-b= -6

Step-by-step explanation:

a+b=8

ab=7

a=7/b

put the value of a

7/b+b=8

8b/7=8

8b=7×8

b=7

put the value of b

a+b=8

7+a=8

a=1

So,a-b=1-7

= -6

Answered by amalgopalap
0

Answer:

a-b=6

a=7

b=1

Step-by-step explanation:

(a+b)^2 -4ab =(a-b)^2

therefore,

(8×8)-(4×7)=(a-b)^2

64-28=(a-b)^2

36=(a-b)^2

6=a-b

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