Step-by-step explanation:
(4x-5)(4x+5)
multiply each
4x×4x=16x^2
4x×5=20x
-5×4x= - 20x
-5×5= -25
16x^2+20x-20x-25
16x^2-25
Answer: 3. 55° 2. 225° 1. 125°
Step-by-step explanation: don't want brainliest
Answer:
10
17-7=10
