Question

if x is equal to 3- root 7 then find the value of x square​

Answer 1

Given :-

★ x = 3 -√7

To Find :-

★ Value of x²

Solution :-

x = 3 - √7

Here, squaring the both sides __

x² = (3-√7) ²

=> x² = (3) ² - 2 × √7 × 3 + ( √7)²

=> x ² = 16 - 6√7

Identity used :

★ ( a -b) ² = a² -2ab + b²

one more Identity

★ (a+b)² = a² + b² + 2ab

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Answer 2

Step-by-step explanation:

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