8. Simplify the expression:ab + 2ab-b+
A) 3a + 9
B) 3ab - b + 9
C) 2ab + 9
D) 3ab - (b + 9)

The question is incomplete. The correct question is written below.

Simplify the expression: ab + 2ab - b + 9

A) 3a + 9

B) 3ab - b + 9

C) 2ab + 9

D) 3ab - (b + 9)

To find:

The simplified expression

Solution:

ab + 2ab - b + 9

Add like (similar) terms.

(1 + 2)ab - b + 9

3ab - b + 9

Therefore, the simplified expression is 3ab - b + 9 .

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)