You have to foil. Times the first two: x(3x). Then times the outer two: x(-1). Then times the inner two: -4(3x). Finally, times the last two: -4(-1). Your equation would be 3x squared - 1x - 12x + 4. Therefore, the simplified answer is 3x^2 (3x to the second power) - 13x + 4.
In order to determine the expression that should be multiplied to n^2 to get 5n^3, divide 5n^3 by n^2. First for the numerical coefficient, 5 divide 1 is 5. For the variable n, n^3/n^2 is n. Thus, the term that should be multiplied to n^2 is 5n.
Answer:
f(2) = 8, f(8) = 80
Step-by-step explanation:
![f(x)=x(x+2)](https://tex.z-dn.net/?f=f%28x%29%3Dx%28x%2B2%29)
![f(2)=2(2+2)=2(4)=8\\f(8)=8(8+2)=8(10)=80](https://tex.z-dn.net/?f=f%282%29%3D2%282%2B2%29%3D2%284%29%3D8%5C%5Cf%288%29%3D8%288%2B2%29%3D8%2810%29%3D80)
75 because you count how many angles there are then you minus by 2 and and divide by 540= and boom its 75