Question

Calculate the following (2+5)²

Answer 1

Answer:

7^2 = 49

Or,

(2 + 5 )^2

= 2^2 + 5^2 + 2×2×5

= 4 + 25 + 20

= 49 Ans...

Answer 2

Answer:

49

Step-by-step explanation:

Here, a = 2 and b = 5

$= > ( {a + b)}^{2} = {a }^{2} + {b}^{2} + 2ab$

$= > {(2 + 5)}^{2} = {(2)}^{2} + (5) ^{2} + 2 \times \\ \: \: \: \: \: \: \: \: \: \: 2 \times 5$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4 + 25 + 20$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 49$