Question

Check all polynomials that are perfect square trinomials:

49x2 − 8x + 16

4a2 − 20a + 25

25b2 − 5b + 10

16x2 − 8x + 1

Answer 1

B .
D .
;)

Answer 2

can u explain

Answer 3

4a² − 20a + 25: discriminant = (-20)² - 4(4)(25) = 0
16x² − 8x + 1: discriminant = (-8)² - 4(16)(1) = 0

The other two aren't these .

Answer 4

Thanks ! ;)

Answer 5

can u help with two more ? i have to put the answers exactly right or i get it wrong

Answer 6

Sure as long as there not as hard as the other one was . xD

Answer 7

Given the following perfect square trinomial, fill in the missing term.

x2 − 16x + ____

Answer 8

even if i have the right answer, if i put in one wrong anything anywhere it will be marked as wrong :/

Answer 9

(x−8)2=x2−16x+64 . How this ?

Answer 10

Given the following perfect square trinomial, fill in the missing term. (Do not type the variable in the blank.)

4x2 + ___x + 49

idk ill have to see when i submit it

Answer 11

wait is that teh answer itself or equation = answer

Answer 12

Ummm , I don't know what you mean but , the answer for the first question you asked was 64 .

Answer 13

:/ crap. well it came up wrong :( so instead of an A i got a D. i hate those questions

Answer 14

Noo ! i didn't answer the last one yet . It was 28 .

Answer 15

Sorry , if I gave you a low grade .

Answer 16

yea i figured out the last one lol and its not your fault, its the stupid database

Answer 17

Well , I'll just give you a medal since I feel guilty .

Answer 18

aw well thanks for helping.

Answer 19

Your Welcome .