Question

guys please solve this question please​

Answer 1

Step-by-step explanation:

Given -

• x - y = 7
• xy = 9

To Find -

• Value of x² + y²

As we know that :-

• (x - y)² = x² - 2xy + y²

» (7)² = x² + y² - 2(9)

» x² + y² = 49 + 18

» x² + y² = 67

Hence,

The value of x² + y² is 67

Additional information :-

Some related formulas :-

• (x + y)² = x² + 2xy + y²
• (x - y)² = x² - 2xy + y²
• (x + y)(x - y) = x² - y²
• (x + y)³ = x³ + y³ + 3x²y + 3y²x
• (x - y)³ = x³ - y³ - 3x²y + 3y²x

Answer 2

Answer:

hope it helps

please mark me brainliest and follow me on