f(x) = 20x² - 18x - 25
f(-1) = 20(-1)² - 18(-1) - 25
= 20 + 18 - 25
= 13
Answer:
Obtuse
Step-by-step explanation:
One of the angles is above 90 degrees
Answer:21
Step-by-step explanation:
Answer:
i think the answer is B, C and D
Answer:
Simplified: -4u? + 5u^2 - 5u - 3
Step-by-step explanation: