Question

Question #07b93

Answer 1

`5`

Explanation:

completing the square
`y=5x^2-50x+20` graph{y=5x^2-50x+20 [-320, 320, -160, 160]}
`y=5(x^2-10x)+20`
`y=5(x^2-10x+25)+20-125`
`y=5(x-5)^2-105`