Question

take thanks first important is answer

give answer and take thanks

agar kise nae notebook mae answer diya tabhi ​

Answer 1

Identities to be used here:-

1. a² + 2ab + b² = (a + b)²
2. a² - 2ab + b² = (a - b)²

1) 79.01 × 79.01 + 2 × 79.01 × 20.99 + 20.99 × 20.99

= (79.01)² + 2(79.01)(20.99) + (20.99)²

= (79.01 + 20.99)²

[Refer to identity 1 given above.]

= (100)² = 10000

2) 0.768 × 0.768 - 2 × 0.768 × 0.568 + 0.568 × 0.568

= (0.768)² - 2(0.768)(0.568) + (0.568)²

= (0.768 - 0.568)²

[Refer to identity 2.]

= (0.2)² = 0.04