Question

If a + b = 3 and ab = 2, then the value of a - b is 1.0 2.. 5 3.-1 4.None of the above

Answer 1

Answer:

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

substituting values of,

a+b = 3

ab = 2

we get,

(a-b)^2 = 3*3 - 4*2 = 1

a-b = 1 or -1

Step-by-step explanation:

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Answer 2

Answer:

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