Answer:
If f(1)=0 then 1 is a root and (x-1) is a factor of f(x). divide f(x) by (x-1). you now have a quadratic. Find its roots by methods you know.
actually this factors by grouping:
f(x)=x³+3x²-x-3
= x²(x+3)-1(x+3)
=(x+3)(x²-1)
=(x+3)(x-1)(x+1) // difference of squares
By zero product property roots are
-3, -1, 1
Answer:
d. 12 cm
Step-by-step explanation:
Corresponding sides have the given ratio:
EG/AC = 3/2 = EG/8 . . . . . . . fill in for AC
EG = 8(3/2) = 12 . . . cm . . . . . . . multiply by 8
LxW (Length times width)
Multiply the L & W to get your answer.
Let's assume that you are to graph the inequality.
1. Graph -3x + 4y = 12. Note that the x-intercept is (-4,0) and the y-intercept is (0,3). Use a dashed line, not a solid line, due to the ">" sign.
2. Choose a test point (e. g., (0,1) ) and subst. these coordinates into -3x + 4y = 12. Is the equation then true or false? If true, shade the area (on one side of -3x + 4y = 12 or the other) in which the test point (0,1) lies. If false, shade the other side of -3x + 4y = 12.
Answer:
Step-by-step explanation:
we have the expression
where
E is the amount in Euros
D is the amount in dollars
Solve for D
That means----> isolate the variable D
Multiply by 20/17 both sides
For E=1 euro
substitute and solve for D
