Question

X²-__x +25=0

Fill in the Blank to make a perfect trinomial ​

Answer 1

10

Explanation:

A perfect square of
`(a-b)^2` should be in the form
`a^2-2ab+b^2`. In this case,
`a^2=1`, and
`b^2 =25`, so a=1 and b=5. Now, we need to find 2ab, so we do

2(1)(5)=10, so 10 goes in the blank.