Question

Help ! Fan and medal !

Bo factored x2 – 10xy + 16y2 as follows:

Line 1 x2 – 10xy + 16y2
Line 2 x2 – 8xy – 2xy + 16y2
Line 3 x(x – 8) – 2y(x – 8y)
Line 4 prime

a. Did Bo correctly factor the polynomial? Justify your response by explaining why it is is factored correctly or by showing the correct solution if it is not factored correctly.
b. Explain how you would know if a polynomial of the form ax2 + bxy + cy2 was prime?

Answer 1

@nikato

Answer 2

from line 2 to line 3 its not right

Answer 3

Bo didnt because the correct way is x(x – 8y) – 2y(x – 8y)
then the best solution will be x2 – 10xy + 16y2 = (x - 2y) (x - 8y)
it is not prime

b) ax2 + bxy + cy2 was prime? if both a and c are prime then the polynomial is prime like X2+5 is prime

Answer 4

yeah i found this answer on another question already, but thanks !

Answer 5

yep no prob