ANSWER ASAP WILL GIVE BRAINLIEST
Choose the correct simplification of (5x − 6)(3x2 − 4x − 3).
A. 15x3 − 38x2 + 9x − 18
B. 15x3 + 38x2 − 9x + 18
C. 15x3 − 38x2 + 9x + 18
D. 15x3 + 38x2 − 9x − 18

Option C

Step-by-step explanation:

I interpret as (5x-6)(3x^2-4x-3)

Expanded: 15x^3-20x^2-15x-18x^2+24x+18

15x^3-38x^2-15x+24x+18

15x^3-38x^2+9x+18

So the correct choice will be C

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1