Question

A quadratic equation is shown below:

x2 + 18x + 76 = 0

Which of the following is the first correct step to write the above equation in the form (x - p)2 = q, where p and q are integers?

Add 9 to both sides of the equation

Add 5 to both sides of the equation

Subtract 5 from both sides of the equation

Subtract 9 from both sides of the equation

Answer 1

please help please im begging

Answer 2

(18/2)²= ?

This would be the number you would need to have as the last term.

Answer 3

so 18?

Answer 4

find that number, and then find the difference between it and between 76.

Answer 5

the last term is NOT 18.

Answer 6

it is (18 ÷ 2) ²

Answer 7

(18/2)²= 9^2 = 18

Answer 8

*81

Answer 9

\(\normalsize\color{black}{ (18/2)^2=9^2=9 \times 9 = 81}\) yes....

Answer 10

what do you add to both sides, to make 76 into 81 ?

Answer 11

so 5

Answer 12

Yes ! +5 to both sides !

Answer 13

thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 14

then use (a+b)²=a²+2ab+b² (but backwards) you welcome !