the value of the following expression when x is equal to -1. (a) 2x-7. (b) x²+2x+1​

2 thoughts on “the value of the following expression when x is equal to -1. (a) 2x-7. (b) x²+2x+1​”

1. -1×2-7= -2-7= -9

   (-1)²+2(-1)+1=1-2+1=2-2=0

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2. Answer:

   a) -9 b) 0

   Step-by-step explanation:

   a) 2x-7 = 2 * -1 – 7

   = -2 -7

   = -9

   b) x²+2x+1​ = -1² + 2 * – 1 + 1

   = 1 + (-2) + 1

   = 1 – 2 + 1

   = -1 + 1

   = 0

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