Which equation shows the quadratic formula used correctly to solve 7x^2=9+x for x?

Step-by-step explanation:

Given:

Standard form of quadratic equation:

Quadratic formula:

where,

Substitute the value into formula

Hence, All the above steps to solve for x using quadratic formula.

e) none of the above because the measure of angle cba is 101°

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