Question

find value of following expression of m = -1
(a) 2m2 - m -2
(b) m2 +2m+1

Answer 1

Answer:

m=-1

a) 2(-1)^2 -(-1)-2

2+1-2=1

b) (-1)^2 +2(-1)+1

1-2+1=0

hope it helps

Answer 2

Answer:

a) -1   b) 0

Step-by-step explanation:

a) 2m2-m-2

m= -1  

2 (-1)2 - (-1) - 2=  2+1+1-2

= 0

b) m2+2m+1

m= -1

(-1)2 + 2(-1) + 1 = -2 - (-2) + 1

= -2 + 2 + 1=  1

therefore a) 0 and b) 1

thank u

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