Question

EXPONENTS
guys and a step-by-step because I am good mentally but I can't answer step-by-step that's that's the reason my teacher says me that you should answer step by step or else you will lose marks so guys please help me give me the answer step by step and the best answer will get the brain list ​

Answer 1

Answer: [ -4/7 ] ^2 / [ 2/7 ] ^3

             = (-4)^2/ (7)^2 / (2)^3/ (7)^3

  Now we will take the reciprocal of the second term and then the division will change into multiplication and the denominator and neumrator will exchange there place....

             = (-4)^2/ (7)^2 * (7)^3/ (2)^3

  Now expand all the terms

            = -4 * -4/7*7   *   7*7*7/2*2*2

Now aswe see two 7's will cancle out and all the 2's will cancle out -4's and we get...

           = -1*-2/1  *  7/1

           = 2 * 7

           = 14

Step-by-step explanation: