Question

Evaluate the following:


$\frac{ \sqrt{441} + \sqrt{169} }{ \sqrt{441} - \sqrt{169} }$
Please help me. Tomorrow is my maths exam. ​

Answer 1

Answer:

17/4

Step-by-step explanation:

21 + 13 ÷ 21 - 13

34 ÷ 8

34/8

17/4

plz mark this answer as the brainliest

Answer 2

Question:-

$\frac{ \sqrt{441} + \sqrt{169} }{ \sqrt{441} - \sqrt{169} }$

Solution:-

$\frac{ \sqrt{441} + \sqrt{169} }{ \sqrt{441} - \sqrt{169} }$

$= \frac{21 + 13}{21 - 13}$

$\frac{34}{8}$

Answer:-

$\frac{17}{4}$

Know More:-

(a+b) ²= a²+b²+2ab

(a-b) ² = a²+b²-2ab

a²-b²=(a+b) (a-b)

(a+b) ²-(a-b) ²=4ab

(a+b) ²+(a-b) ²=2(a²+b²)

a²+b²=(a+b) ²-2ab

(a+b) ³=a³+3a²b+3ab²+b³

(a-b) ³=a³-b³-3ab(a-b)

a³+b³=(a+b) (a²-ab+b²)

a³-b³=(a+b) (a²+ab+b²)

(a+b+c) ²=a²+b²+c²+2ab+2bc+2ca

a³+b³+c³-3abc=(a+b+c) (a²+b²+c²-ab-bc-ca)