Answer:
b = 4, or -4
Step-by-step explanation:
b^2 - 4*4*1 = 0
b^2 = 16
b = 4, or -4
Answer:
What is 9+10? It's 19
Step-by-step explanation:
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Answer:
Solution in photo
Step-by-step explanation:
Answer: acute angles are higher that 0° and smaller than 90°
Step-by-step explanation: obtuse are between 90° and 180°