Exam Review

Find the sum.

(2x² + 5x - 7) + ( 3 - 4x² + 6x)

• 2x² + 3x +1

• -2x² - 11x -4

• 2x² + 5x -7

• -2x² + 11x -4

Find the difference. 

(3 - 2x + 2x²) - (4x - 5 + 3x²)

• x_² + 6x + 8

• 2x² + 5x - 7

• -x² - 6x + 8

• -2x² + 11x - 4

Simplify:

(3x − 6)(7x + 7)

• 21x² − 63x + 42

• 21x² − 21x − 42

• 21x² − 42

• 21x² + 63x + 42

f(x) = 9 - 3x

g(x) = 5x - 7

Find f(x) + g(x)

• 14x - 10

• -8x + 2

• 2x + 2

• 2x - 2

f(x) = x² + 9

g(x) = x - 9

Find f(x) - g(x)

• x² + x + 9

• x² - x + 9

• x² - x

• x² - x + 18

f(x) = 4x + 8

g(x) = x + 3

Find f(x) ⋅ g(x)

• 4x² + 24

• 4x² + 20x + 24

• 4x² + 12x + 24

• 4x² + 4x + 24

f(x)=3x-8

Find f(6)

• -8

• 10

• -144

• answer not here

• 2x

• -3

• 3

• 10

f(x) = -4x + 6

f(x) = -30

Find x

• x = 9

• x = -9

• x = 30

• x = -30