Answer:
A, E, And D
Step-by-step explanation:
i did the quiz :)
Answer:
6- D
4- A
3- A
Step-by-step explanation:
X^4 - 5x^2 - 36 = 0
(x^2 - 9)(x^2 + 4) = 0 - factor the left side
(x + 3)(x - 3)(x^2 + 4) = 0 - factor (x^2 - 9 as difference of squares)
x + 3 = 0 x - 3 = 0 x^2 + 4 = 0 Set each factor to 0 if any 0 the left side 0
x = -3 x = 3 x^2 = -4
x = 2i or -2i
The roots are 3, -3, 2i, -2i (Don't know if you need the imaginary roots but I gave you them anyway)
Answer:
#4. in a decimal its 0.5
before simplfied its 6\12
after simplfied its 1\2
#5. in a decimal its 0.28125
in fraction 9/32
