Question

solve the problem please find the answers please orgent please reply fast ​

Answer 1

Answer:

#ans. for 15th que:

=27^-4

=(3³) ^-4

=3 ^3×-4

=3 ^-12

*thus correct answer is option 4) 3 ^-12

#que 16th:

=(ab)^m

=(a×b)^m

=a^m×b^m

or

= a^m b^m

*option no. 2. is correct

#No.17 :

If 7x - 5= 2x , then value of x_

we can put x= 1

7(1) -5 = 2(1)

7×1 - 5 = 2×1

7 - 5 = 2

* So, x= 1 is correct value for equation 7x- 5= 2x