Which expressions are equivalent to 4a-84a−8. Select all that apply. 1.) −8+4a
2.) 8-4a8−4a
3.) 4a+-84a+−8
4.) 2(2a-4)2(2a−4)
5.) 4(a-8)4(a−8)

Write the fraction or mixed number and the decimal shown by the model

Which of the following is the true for f(x) = 5cos

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible