Answer:
2x-1
Step-by-step explanation:
(10x-5)-(8x+6)
10x-8x-5+6
2x-1
Answer:
3√15/4
Step-by-step explanation:
sin x = 2/8
- from the trigonometric rule sin²x+cos²x = 1
- cos²x = 1-sin²x
sinx = 2/8
sin²x = (2/8)² = 2²/8² = 4/64
1- sin²x = 1-4/64 = 64 -4/64 = 60/64 = 15/16
cos x = √(15/16) = √15 /4
3 x cos x = 3 x √15/4 = 3√15/4
Answer:
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Hope it helps...
Have a great day!!
This factors to 64 - 4i^2
64 + 4
68 is the answer