Question

Pls help with part b. Will mark brainliest and report rubbish answers.

Thank you ppl!!​

Answer 1

Answer:

• 81

Step-by-step explanation:

• (x + y)⁴ =
• ((x + y)²)² =
• (x² + y² + 2xy)² =
• (5 + 2*2)² =
• 9² =
• 81

Answer 2

The given information is,

• x² + y² = 5
• xy = 2

$\sf \: The \: solution \: of \: (b) \: will \: be, \\ \sf → (x + y)^4 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf → ((x + y)²)² \: \: \: \: \: \: \: \: \: \: \: \\ \sf → (x² + y² + 2xy)² \: \\ \sf → {5 + (2 × 2)}² \: \: \: \: \: \: \: \: \: \\ \sf \to (5 + 4)² \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ → \sf 9² = 81 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$