Write the polynomial as a product: 15x^3z+30x^2–18yz–9xyz^2

15x³z + 30x² - 18yz - 9xyz² =

= 15x³z + 30x² - 9xyz² - 18yz =

= 15x²(xz + 2) - 9yz(xz + 2) =

= (15x² - 9yz)(xz + 2)

15x^2(xz + 2) - 9yz(2 + xz)

(15x^2 - 9yz)(xz + 2)

3(5x^2-3yz)(xz + 2)

it is true

step-by-step explanation:

all the combinations add up i used   calculator

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w