If x2 + = 79, find the value of x +

Here, we will use (a+b)2 = a2 + b2 + 2ab

Q8 of 84 Page 5

If x² + = 79, find the value of x +

Here, we will use (a+b)² = a² + b² + 2ab

If x + = , find the value of x² + and x⁴+

If x² + = 66, find the value of x -

If 9x² +25y² = 181 and xy = -6, find the value of 3x +5y

If 2x +3y = 8 and xy = 2, find the value of 4x² +9y²