## mikaa_toxica13 2 years ago Check all polynomials that are perfect square trinomials: 49x2 − 8x + 16 4a2 − 20a + 25 25b2 − 5b + 10 16x2 − 8x + 1

1. BurrDaBoss

B . D . ;)

2. mikaa_toxica13

can u explain

3. BurrDaBoss

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 .

4. BurrDaBoss

Thanks ! ;)

5. mikaa_toxica13

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

6. BurrDaBoss

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

7. mikaa_toxica13

Given the following perfect square trinomial, fill in the missing term. x2 − 16x + ____

8. mikaa_toxica13

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

9. BurrDaBoss

(x−8)2=x2−16x+64 . How this ?

10. mikaa_toxica13

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

11. mikaa_toxica13

12. BurrDaBoss

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

13. mikaa_toxica13

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

14. BurrDaBoss

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

15. BurrDaBoss

Sorry , if I gave you a low grade .

16. mikaa_toxica13

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

17. BurrDaBoss

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

18. mikaa_toxica13

aw well thanks for helping.

19. BurrDaBoss