Question

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

@jim_thompson5910 @zepdrix

Answer 2

@Awesome781 @bribri50 @Compassionate @d3th21 @FBland1

Answer 3

@zzr0ck3r

Answer 4

can you help? @zzr0ck3r

Answer 5

@ganeshie8 @Hero @jim_thompson5910

Answer 6

@thomaster @Luigi0210

Answer 7

@dan815 @iambatman @phi @jdoe0001

Answer 8

@nincompoop @myininaya

Answer 9

What's the middle coefficient?

Answer 10

i thought it was 18x ... @jim_thompson5910

Answer 11

or is it 9? @jim_thompson5910

Answer 12

18x is the middle term

so 18 is the middle coefficient

Answer 13

cut that in half to get 18/2 = 9

then square it to get 9^2 = ???

Answer 14

so I would need to subtract 9 from both sides?

Answer 15

that would be 81

Answer 16

x^2 + 18x + 81 is a perfect square

we have x^2 + 18x + 76

Answer 17

x^2 + 18x + 76 = 0

x^2 + 18x + 76 + ____ = 0 + ____

x^2 + 18x + 81 = ____

Answer 18

so I would subtract 5 from both sides?

Answer 19

76 -5 = 71 not 81

Answer 20

then adding it is. :)

Answer 21

yep

Answer 22

Thanks for your help. I really appreciate it. :)

Answer 23

you're welcome