Answer:
1 is the 4th answer
2 is 1.875
Step-by-step explanation:
1/2*3 3/4=1.875
(cos Ф -cos Ф)² + (cos Ф + cos Ф)²
Firstly: (cos Ф -cos Ф)² = 0² = 0
Secondly :(cos Ф + cos Ф)² = (2cos Ф)². = 4. (cos Ф)² = 4cos² Ф
Mind you when you raise a cosine (or sin or tan...) to the n power, the n power should affect the cosine only and NOT the angle Ф
Answer:
4x+2
Step-by-step explanation:
2(2x+1)
4x +2
you distribute the the 2