Subtract the polynomials:
2x^2−3xy+4y^2 from 3x^2−5xy−6y^2

x² - 2xy - 10y²

Step-by-step explanation:

(3x² - 5xy - 6y²) - (2x² - 3xy + 4y²)

3x² - 5xy - 6y² - 2x² + 3xy - 4y² (remove parentheses)

3x² - 2x² - 5xy + 3xy - 6y² - 4y²  (Arrange to solve more easily)

x² - 2xy - 10y²

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers