Exercise 1 Page 56

To evaluate the given expression for m=- 3 and n=2, we should substitute these values into the expression and simplify as much as possible.

m^2+2mn/n^2-1

SubstituteII

m= - 3, n= 2

( - 3)^2+2( - 3)( 2)/2^2-1

CalcPow

Calculate power

9+2(- 3)(2)/4-1

MultNegPos

(- a)b = - ab

9+2(- 6)/4-1

MultPosNeg

a(- b)=- a * b

9-12/4-1

SubTerms

Subtract terms

- 3/3

MoveNegNumToFrac

Put minus sign in front of fraction

-3/3

QuotOne

a/a=1

- 1

This corresponds to option B.