Select the correct answer. what is the simplest form of this expression? (2x − 3)(3x2 + 2x − 1) a. 6x3 − 5x2 − 8x + 3 b. 6x3 − 5x2 − 6x + 2 c. 6x3 − 9x2 − 4x + 3 d. 6x3 − 2x2 − 8x + 3

A. 6x3 − 5x2 − 8x + 3

Step-by-step explanation: this is a multiplication (2x − 3) = A (3x2 + 2x − 1) = B, so we are going to multiply each value from A with every value of B

for example you can start 2X from A

2X . 3X2 = 6X3

2X . 2X = 4X2

2X . -1 = -2X

now with -3

-3  . 3X2 = -9X2

-3 . 2X = -6X

-3  . 1 = -3

mow we can put every value in one equation

6X3 +  4X2 + 2X - 9X2 -6 X - 3

after that, you can simplify the common values for example

4X2 - 9X2 = -5x2

- 2X - 6 X  = -8x

this the last equation that we get after simplify

6x3 − 5x2 − 8x + 3

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column