What are all the solutions of x2 + 3x – 4 = 0?
-4
-2
-1
0
1
2
4

1, -4

Step-by-step explanation:

Move all the terms to the left side and set equal to zero. Then set each factor equal to zero. X= 1,-4

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°