If m^(-1) = -1/7 then m^(-2) is equal to	Choices:	A) -9	B) -3	C) -1/9	D) 1/49	E) 9
You made a mistake here.   You're right till   m^-2 = 1/m^2 and m^-1 = 1/m^1 = 1/m   given m^-1 1/  1= 
<gadget id="calculator">1/  1</gadget>
<output>1</output>
1/m   given m^-1= -(1/7) so, 1/m = -(1/7) solving this, m = -7   Now, m^-2 = 1/m^2 = 1/(-7)^2 = 1/49 ANS 1/49
<result>D</result>
If m^(-1) = -1/7 then m^(-2) is equal to