Question

If x= 1/ 5–2√3 and y= 1/ 5+2√3 find the value of 5xy.​

Answer 1

Step-by-step explanation:

5×[(1/5-2√3)×(1/5+2√3)]

Now apply the formula

(a+b)(a-b)=a²-b²

So,5×[(1/5)²-(2√3)²]

5×1/25-4x3

-11.8

Answer 2

Step-by-step explanation:

may it helps you

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