(4x3 – 2x2 + 3x – 1) + (5r2 - x - 5).
What is the sum ?

The sum is 4x³ + 3x² + 2x – 6.

Solution:

The correct question is given below.

(4x³ – 2x² + 3x – 1) + (5x² – x – 5). What is the sum?

To find the sum of the polynomial:

Sum of (4x³ – 2x² + 3x – 1) and (5x² – x – 5)

           = (4x³ – 2x² + 3x – 1) + (5x² – x – 5)

Remove the parentheses.

           = 4x³ – 2x² + 3x – 1 + 5x² – x – 5

Group like terms together.

           = 4x³ – 2x² + 5x² + 3x – x – 1 – 5

Add the similar elements. i.e the element with same power.

           = 4x³ + 3x² + 2x – 1 – 5

Subtract the constant terms.

           = 4x³ + 3x² + 2x – 6

The sum is 4x³ + 3x² + 2x – 6.

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

a

step-by-step explanation:

the answer is a