# algebra 1

posted by .

find a value for k that will make 4x^2 + 6.4x + k a perfect square. again this stuff is kicking my behind

• algebra 1 -

(2x + 1.6)^2 = 4x^2 + 6.4x + 1.6^2,
so if you make k = 1.6^2 = 2.56, you have a perfect square

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### Algebra 2

Replace each of the question marks with a value that will make the polynomial a perfect square trinomial. 1. 4x^2+12x+?
2. ### Algebra

what is a perfect square number i know 9, 25 and 100, but what else if you multiply a perfect square by a perfect square, is the answer always a perfect square
3. ### algebra 1

find a value for k that will make 4x^2 + 6.4x + k a perfect square. describe the procedure that you used which requires algebra. I have the answer and it is k = 1.6^2 or 2.56 i just don't get how we got there
4. ### college algebra

how to solve this problem. Completing the square. Find the value of a such that u^2-8u+a is a perfect square
5. ### Alg2

Find the value of c that will make the expression x^2-15x+c a perfect square. would c = 56.25 ?
6. ### algebra

FIND THE VALUE OF K, SO THAT THE EXPRESSION IS A PERFECT SQUARE TRINOMIAL. x^2+6x+k k=
7. ### algebra 2

find the value of c that makes each trinomial a perfect square. then write the trinomial as a prefect square. x^2-10x+c x^2+60x+c
8. ### 10th algebra

x2+22x +c find the value of c that makes the trinomial a perfect square
9. ### maths

what least number must be added to 630 to make the sum a perfect square?
10. ### Algebra

y^2-7y+p. Find the value of p that it becomes a perfect square algebra

More Similar Questions