Question

What number completes the square? x^2 + 10x + _
A. 10
B. 100
C. 20
D. 25

Answer 1

hi,
\[(x + 5)^{2} = x ^{2} + 10x +25\]

I think this would help ya!!!

Answer 2

25 should be the answer if the above given expression equals zero
on putting 25 you can factor the given expression and express it like this (x+5)^2=0

Answer 3

Thank you!

Answer 4

u r welcome!!