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zepelin [54]
3 years ago
5

Simplify: (x^2+2x-1)-(x+1)

Mathematics
2 answers:
n200080 [17]3 years ago
8 0

Answer:

x² + x - 2

Step-by-step explanation:

Simplify the following:

\longrightarrow (x² + 2x - 1) - (x + 1)

-(x + 1) = -x - 1:

x² + 2x - 1 - x - 1

Grouping like terms,

x² + 2x - 1 - x - 1 = x² + (2x - x) + (-1 - 1):

\longrightarrow x² + (2x - x) + (-1 - 1)

2x - x = x:

\longrightarrow x² + x + (-1 - 1)

-1 - 1 = -2:

\longrightarrow x² + x - 2

notka56 [123]3 years ago
6 0

Answer:

x^2+x-2

this is the answer bc the 2nd parentheses is being multiplied by the negative  sign meaning you need to subtract it from the 1st parentheses.

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Answer:

y = \frac{1}{2}(x - 5)² - 2

Step-by-step explanation:

The equation of a parabola in vertex form is

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To find a substitute (7, 0) into the equation

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Answer:

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Step-by-step explanation:

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