Which of the following equations are true? Select three that apply. A
(2x−1)(x2+4x+3)=2x3+7x2+2x−3

B
(4x2−3x+6)+(5x2−8)=9x2−3x−2

C
(8x−4x2)+(2x2−5x)=−2x4+3x

D
(4x2+4x−5)−(6x2−5x−3)=−2x2−x−8

E
(3x3−5+2x)−(5x−6+x3)=2x3−3x+1

ANSWER: A, B, E :)

answer: you need to organize this better it does not make sense.

step-by-step explanation: ?

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)

96 cm is the answer.