Question

Complete the square. Fill in the number that makes the polynomial a perfect-square quadratic.

x2-30x+

Answer 1

225

Explanation:

a
`x^(2)` - bx + c

`((b)/(2)) ^(2)`

`((-30)/(2)) ^(2)`

`(-15)^(2) \\`

225

`(x-15)^(2)` =
`x^(2)` - 30x + 225