algebra 1
posted by Dippy .
find a value for k that will make 4x^2 + 6.4x + k a perfect square. again this stuff is kicking my behind

(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
Similar Questions

Algebra 2
Replace each of the question marks with a value that will make the polynomial a perfect square trinomial. 1. 4x^2+12x+? 
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 
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 
college algebra
how to solve this problem. Completing the square. Find the value of a such that u^28u+a is a perfect square 
Alg2
Find the value of c that will make the expression x^215x+c a perfect square. would c = 56.25 ? 
algebra
FIND THE VALUE OF K, SO THAT THE EXPRESSION IS A PERFECT SQUARE TRINOMIAL. x^2+6x+k k= 
algebra 2
find the value of c that makes each trinomial a perfect square. then write the trinomial as a prefect square. x^210x+c x^2+60x+c 
10th algebra
x2+22x +c find the value of c that makes the trinomial a perfect square 
maths
what least number must be added to 630 to make the sum a perfect square? 
Algebra
y^27y+p. Find the value of p that it becomes a perfect square algebra