Question

plz solve it its toooo urgent ​

Answer 1

(3.5)^(2)−2×(3.5)×(0.5)

(3.5)^(2)−2×(3.5)×(0.5)+(0.5)^(2)÷(3.5)^(2)−2

(3.5)^(2)−2×(3.5)×(0.5)+(0.5)^(2)÷(3.5)^(2)−2×(3.5)×(0.5)+(0.5)^(2)

= 5.5204081633

Answer 2

Answer:

9/16

Note:

★ (a + b)² = a² + 2ab + b²

★ (a - b)² = a² - 2ab + b²

★ (a + b)(a - b) = a² - b²

★ (a + b)³ = a³ + b³ + 3ab(a + b)

★ (a - b)³ = a³ - b³ - 3ab(a - b)

★ a³ + b³ = (a + b)(a² - ab + b²)

★ a³ - b³ = (a - b)(a² + ab + b²)

Solution:

We have ;

(3.5)² – 2(3.5)(0.5) + (0.5)²

=> ---------------------------------------

(3.5)² + 2(3.5)(0.5) + (0.5)²

( 3.5 – 0.5 )²

=> --------------------

( 3.5 + 0.5 )²

=> 3² / 4²

=> 9 / 16

Hence,

The required answer is 9/16 .