Question

Complete the trinomial so it is a perfect square.
16x2 + ___+ 25

Answer 1

10x is the missing blank

Answer 2

40x

Answer 3

squareroot 25=5*2=10

Answer 4

How did you get 40x?

Answer 5

10/2=5
5^2=25

Answer 6

shouldn't the answer be 7?
16x2=32
32+25=57
57+7=64 which is a perfect square

Answer 7

simplify (4x+5)^2

Answer 8

is the "x" in this question a variable or the multiplication symbol?
I took it to be a multiplication sign.

Answer 9

a variable

Answer 10

rld did u get why its 40x?

Answer 11

ya Thnaks

Answer 12

in that case the answer is indeed 40x

Answer 13

Im confused is it 40 or 10 or what? :S

Answer 14

y aI totally messed up!!!

Answer 15

its 40x

Answer 16

to be precise its plus or minus 40x

Answer 17

\[(4x+5)^{2}=16x^{2}+40x+25\]as arjuna indicated.

Answer 18

or (4x-5)^2

Answer 19

true:\[(4x-5)^{2}=16x^{2}-40x+25\]

Answer 20

sorry:\[\pm40x\]

Answer 21

It should be 40x only

Answer 22

yes rid613, as the question implies it is "+":
16x2 + ___ + 25