(k - 1)(k - 4)
Use FOIL to solve this.
First
k * k
Outer
k * -4
Inner
-1 * k
Last
-1 * -4
k^2 - 4k - 1k + 4
k^2 - 5k + 4 is the trinomial.
-3(2x-4)+8x-8
-6x+12+8x-8
2x+4
x=2
According to one source, the answer is "C. Randomly select and replace a donut 72 times. Then, observe how close to 18 times a glazed donut is drawn. "
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We can seperate (3b³) into two different parts, the constant and the variable.
The constant (3) and the variable (b) can both be squared and multiplied to get the correct answer, so:
3² = 9
(b³)² = 
So, 
14.1666667 times. Rounded- 14.167 pr 14.17
