Functions

Function Evaluation

100

f(x) = x+2

Find f(4)

6

200

f(x) = x²-3

Find f(-2)

1

300

g(x) = 2x+y

Find g(x) when x = 1 and y = 5

7

400

g(x) = x²-5xy

Find g(x) when x = -2 and y = 3

34

500

g(x) = x²-3xy+6

Find g(x) when x = 3 and y = -1

24

GEMDAS

100

Simplify the expression

2x+4+5x

7x+4

200

Simplfiy the expression

5x+2(x-3)

7x-6

300

Simplify the expression

2x²-2(3x²+5x)

-4x²-10x

400

Simplify the Expression:

2x-(3x²+4x)

-3x²-2x

500

Simplify the Expression:

2(4x-5)-(3x+6)

5x-16

Adding Functions

100

f(x) = x

g(x) = 3x

What is f(x) +g(x)?

4x

200

f(x) = 4+x

g(x) = 3x-2

What is f(x)+g(x)

4x+2

300

f(x) = x²+x

g(x) = 2x+5

What is g(x) + f(x)?

x²+3x+5

400

f(x) = 3-x

g(x) = x²-6x+2

What is g(x) + f(x)?

x²-7x+5

500

f(x) = 2x²-5

g(x) = x²+3x+2

What is f(x) + g(x)?

3x²+3x-3

Subtracting Functions

100

f(x) = 2x+3

g(x) = x-4

What is f(x) - g(x)?

x+7

200

f(x) = x²-5

g(x) = x+2

What is f(x) - g(x)?

x²-x-7

300

f(x) = 3x-4

g(x) = x²+x

What is g(x)-f(x)?

x²-2x+4

400

f(x) = x+6

g(x) = x²-1

What is f(x) - g(x)?

-x²+x+7

500

f(x) = 3x²+5x

g(x) = 2x²+3x-7

What is f(x)-g(x)?

x²+2x+7

Function Multiplication

100

f(x) = x+2

g(x) = 3x

What is f(x) x g(x)?

3x²+6x

200

f(x) = 4x-1

g(x) = x+2

What is g(x) x f(x)?

4x²+7x-2

300

f(x) = 2x-1

g(x) = 3x-5

What is f(x) x g(x)?

6x²-13x+5

400

f(x) = 4x²

g(x) = 3x+4

What is f(x) x g(x)?

12x³+16x²

500

f(x) = 2x+3

g(x) = x²+x

What is f(x) x g(x)?

2x³+5x²+3x