Answer:
f (x) = 2.3x grows the value of x at faster rate
Answer:
a = - 2, b = - 6
Step-by-step explanation:
Substitute the values of the zeros into the polynomial and equate to zero.
x² +(a + 1)x + b
x = - 2 → (- 2)² - 2(a + 1) + b = 0 , that is
4 - 2a - 2 + b = 0
2 - 2a + b = 0 ( subtract 2 from both sides )
- 2a + b = - 2 → (1)
x = 3 → 3² + 3(a + 1) + b = 0, that is
9 + 3a + 3 + b = 0
12 + 3a + b = 0 ( subtract 12 from both sides )
3a + b = - 12 → (2)
Subtract (1) from (2) term by term to eliminate b
5a = - 10 ( divide both sides by 5 )
a = - 2
Substitute a = - 2 into either of the 2 equations and evaluate for b
Substituting into (2)
3(- 2) + b = - 12
- 6 + b = - 12 ( add 6 to both sides )
b = - 6
Thus a = - 2 and b = - 6
Answer: x=-2
Step-by-step explanation:
Here is the step-by-step solving.
The coefficient of x in this case is 1. (x*x = x^2)
Answer:
Perimeter of the rectangle=16 x
Step-by-step explanation:
Step 1: Determine the dimensions of the rectangle
Width=x
Length=7 x
But;
Step 2: Determine the perimeter of the rectangle
P=2(L+W)
where;
P=perimeter
L=length
W=width
In our case;
P=unknown
W=x
L=7 x
replacing;
2(x+7 x)=2 x+14 x
16 x
Perimeter of the rectangle=16 x
