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McGraw Hill Glencoe Algebra 2, 2012

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McGraw Hill Glencoe Algebra 2, 2012 View details

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Exercise 4 Page 217

Substitute 4 for x to calculate the function's value.

- 21

Practice makes perfect

Using the function g(x), we want to evaluate for the given value, g( 4). To do this, we need to substitute 4 for x in each instance of the x-variable.

g(x)=- x^2-2x+3

x= 4

g( 4)=- ( 4)^2-2( 4)+3

Calculate power

g(4)=- (16)-2(4)+3

Remove parentheses

g(4)=- 16-2(4)+3

Multiply

g(4)=- 16-8+3

Add and subtract terms

g(4)=- 21

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