Answer:
5x^2-13x+6
Step-by-step explanation:
(8x^2-6x+2)-(3x^2+7x-4)
8x^2-3x^2-6x-7x+2-(-4)
5x^2-13x+2+4
5x^2-13x+6
Answer:
i might be wrong but 8 if not (2,8) if not sorry
Step-by-step explanation:
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
10 and 2/3 = 32/3
32/3 x 8 = 256/3
256/3 = 85.33333333333 repeating
