## Related questions with answers

Question

Find the value of k that would make the left side of each equation a perfect square trinomial. $25 x^{2}-k x+1=0$

Solutions

VerifiedSolution A

Solution B

Answered 2 years ago

Step 1

1 of 5We find the value of $k$ from the expression $25x^2-kx+1=0$ by using the formula of the discriminant of the polynomial,

$b^2-4ac =0$

Step 1

1 of 3$25x^2-kx+1$

$(5x-1)^2$

We know this is a square, so we need a 5 before the $x$ and a 1. We know it needs to be negative because the middle term is negative.

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