F(4) = 2(4)^3 -5
= 2(64) -5
= 128-5
= 123
Hope this helps!
Answer:
The factored form of the polynomial is 11*(x+2)*(x-5/11). The root found was r = -2
Step-by-step explanation:
If you take a positive value of x, you will most likely obtain positive results, since 11x² + 17x ≥ 11 + 17 = 28 for x ≥1, which means that 11x²+17x-10 ≥ 28-10 = 18 > 0.
Therefore, we prove with negative values.
- x = -1: 11*(-1)²+17*(-1) - 10 = -16
- x = -2: 11*(-2)² + 17*(-2) - 10 = 44-34-10 = 0
Therefore, -2 is a root. We can find the other knowing that
p(x) = 11*(x-r₁)*(x-r₂) = 11*(x-(-2)) * (x-r₂) = 11*(x+2)*(x-r₂)
The independent term is 11*2*(-r₂) = -22r₂ = -10
thus, r₂ = -10/-22 = 5/11.
Therefore, p(x) = 11*(x+2)*(x-5/11)
It should be 0.925, 1/4*3.7=0.925 hope this helps!
Answer:
5/b
Step-by-step explanation:
you would want to add your 1+4 together on top of your b which is your common denominator in this case and you should end up with 5/b
Asking the Math Gods...
X=2
Y=5
Sub y=3x-1
[(3x-1)=7x-9]
Isolate x for (3x-1)=7x-9: x=2
for y=3x-1
Sub x=2
y=3*2-1 y=5