2(x+3)=x-4 what is x?

x=-10

Step-by-step explanation:

2(x+3)=x-4

2x+6=x-4, subtract x from both sides

x+6=-4, subtract 6 from both sides

x=-10

Plug it back in to check

2(-10+3)=-10-4

2(-7)=-14

-14=-14

step-by-step explanation:

a and d

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)