Question

can you please give me some questions like x+y=5 and xy=4 then find the value of x-y using identities​

Answer 1

Answer:

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Step-by-step explanation:

Solution: x+y = 5

xy = 4

4xy = 16

x^2+2xy+y^2 = 25

x^2–4xy+2xy+y^2 = 25–16 = 9

x^2–2xy+y^2 = 9

(x-y)^2 = 3^2, or

x-y = ±3. Answer.