Question

Class. 9. please. help. ​

Answer 1

Answer:

bhai bohot saare questions hai ek saat

Answer 2

Step-by-step explanation:

3)

a)

${x}^{4} - 16 \\ {x}^{4} = 16 \\ x = \sqrt{ \frac{16}{4} } \\ x = \sqrt{4} \\ x = 2$

6)

${27}^{k} = \frac{9}{ {3}^{k} } \\ {9}^{k} = \frac{9}{k} \\ {9}^{k} - \frac{9}{k} = 0 \\ = \frac{81k}{ {9k}^{2} } = 0 \\ 9 {k}^{2} = 81k \\ {k}^{2} = 9k \\ k = \sqrt{9k}$