Question

What is the value of "c" by completing the square. x^2 - 14x +

Answer 1

`\large\boxed{\sf \ \ 49 \ \ }`

Explanation:

Hello,

we need to get the discriminant = 0 meaning

`\Delta = b^2-4ac = 0\\\\<=>14^2-4c=0\\\\<=>c=(196)/(4)=49`

And then the square is

`x^2-2\cdot 7\cdot x+7^2=(x-7)^2`

Hope this helps