Answer Key

original 6x − 7x5 + 4x

2 + 9

standard form −7x5 + 4x

2 + 6x + 9

leading coefficient

(coefficient of the first term when in standard form) -7

5

original 6x − 7x5 + 4x

2 + 9

standard form −7x5 + 4x

2 + 6x + 9

degree

(the highest exponent of the polynomial)

(9 + 2x2 − 11x) + (13x

2 − 7 + 2x)

9 + 2x2 − 11x + 13x

2 − 7 + 2x

15x2 − 9x + 2

(-3y2 − 7y − 2) − 1(5y

2 + 4y − 5)

-3y2 − 7y − 2 − 5y

2 − 4y + 5

-8y2 − 11y + 3

-4(-5x + 1) 20x − 4

(2x − 1)(-4x + 3)

-8x2 + 6x + 4x − 3

-8x2 + 10x − 3

(2x2 + x)(3x

2 – 2x + 1)

6x4 – 4x

3 + 2x2 + 3x

3 − 2x2 + 1x

6x4 – x3 + x

Remember: Area = length x width