To complete the square of x^2+bx , a number is added to the expression.Explain why the number added cannot be negative

To complete the square of x^2+bx , a number is added to the expression.Explain why the number added cannot be negative

x^2+40x+c

In this question you have to complete the square, but i am confused becuase it is all letters.

Find the number to add to x^2+14x

f(x)=2x^2-x+1 what I did: 2x^2/2 - x/2 = -1/2 x^2 - x/2 = -1/2 x^2 - x/2 +1/16 = -1/2 +1/16 (x-1/4)^2= -7/16 Vertex: (1/4, 7/16) But when I graph...

1.) x2-4x+1=22 2.) x2+16x+4=0

Y2 -4y-5=0

solve by completing the square

can someone please explain this problem to me?

3x2+6x=2x2+40 And x2-2x=3 And x2+10x-3=0

2x^2+49=-20x

I need help on my homework. College algebra.

2k2+7k-4=0

idk how to complete the square any help z^2+22z+c

complete the square

The problem is a squared-2a-8=0 I do not know how to do this because I was absent. My teacher told me the answer, which is (4,-2), but I do not get how to solve it! Please help

Complete the square

complete the square

a2-10a+36=0

p2-14p-13=0