1: 25(x^2−3)+11=17

2:If using the method of completing the square to solve the quadratic equation x^2-13x+14=0, which number would have to be added to "complete the square"?

3:If using the method of completing the square to solve the quadratic equation x^2-13x+14=0, which number would have to be added to "complete the square"?

4:x^2-6x=7

5:x^2+22=−12x

1.the answer is +9/5 or - 9/5.

4.answer is 7 and - 1

Step-by-step explanation:

1.open the brackets

25x^2-75+11-17=0

25x^2-81=0

25x^2=81

x^2=81/25

x=+9/5

x=-9/5

4.x^2-6x-7=0

Factorise it and you get

(x-7)(x+1)=0

Where x-7 is 0 or x+1 is 0

So x can be 7 and - 1

15 units use socratic

step-by-step explanation: 15 units

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