Question

Which of the following constants can be added to x^2 - 3x to form a perfect square trinomial?

1 1/2
2 1/4
4 1/2

Answer 1

Like what I've told earlier, divide the coefficient of x (in this case, it is -3), then once you get the quotient, square it.

Answer 2

so divide -3 then square it?

Answer 3

Oops, I forgot to write that you should divide -3 by 2.

Answer 4

which is 1.5?

Answer 5

Keep it in fraction, since your choices are in fraction.

Answer 6

sqrt 1 1/2

Answer 7

Why is it there a square root? -3 divided by 2 is -3/2.

Answer 8

Then square it. \[\left( -\frac{ 3 }{ 2 } \right)^2\]

Answer 9

divide by 2 then find square root?

Answer 10

ohh

Answer 11

Not the square root, but you square it. ^2

Answer 12

which would just be 1 1/2

Answer 13

\[-\frac{ 3 }{ 2 }\times-\frac{ 3 }{ 2 }=????\]

Answer 14

What is -3 times -3 (numerator)? What is 2 time 2 (denominator)?

Answer 15

9/4

Answer 16

= 2 1/4

Answer 17

Yes. :)