Step-by-step explanation:
(x² - 3x + 4) (-2x² + 4x - 1)
Start by distributing the first term into the second:
-2x² (x² - 3x + 4) + 4x (x² - 3x + 4) - 1 (x² - 3x + 4)
Now distribute each term:
-2x⁴ + 6x³ - 8x² + 4x³ - 12x² + 16x - x² + 3x - 4
Combine like terms:
-2x⁴ + 10x³ - 21x² + 19x - 4
Answer:
The lengths 27
Step-by-step explanation:
I think the answer would be be C.
Answer:
6.75
Step-by-step explanation:
Answer:
u = x²
Step-by-step explanation:
4x⁴ − 21x² + 20 = 0
4(x²)² − 21x² + 20 = 0
If we substitute u = x²:
4u² − 21u + 20 = 0