What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.x = + √7/9 and x = ±1 x = + √7/9 and x = ±
i x = +i √7/9 and x = ±1 x = +i √7/9 and x = ±I
2 answers:
Answer:
Step-by-step explanation:
9x⁴ – 2x² – 7 = 0
Let's say that u = x²:
9u² – 2u – 7 = 0
Factor:
(u – 1) (9u + 7) = 0
u = 1, -7/9
Since u = x²:
x² = 1, -7/9
x = ±1, ±i √(7/9)
Answer:
the answer is c on edgenunity
Step-by-step explanation:
You might be interested in
It’s should be B. The graphs will be identical in shape but the second one will be shifted up 7 units
Answer:
c po. scle factor po
Step-by-step explanation:
tama po yan
-2 < 4x - 10 < 6
+10. +10. +10
8 < 4x < 16
÷4. ÷4. ÷4
2 < x < 4
Answer:
Zeroes: None
Domain: All real numbers
Maximum: None
Step-by-step explanation:
EDGE PRECAL 2020
