( y - 4 ) ( y² + 4 y + 16 ) = y³ + 4 y² + 16 y - 4 y² - 16 y - 64
The result is a polynomial of the form:
y³ + 4 y² + a y - 4 y² - a y + 64;
Answer: a = 16
Part A:
The total area = x² + 12x + 20 = (x+2)(x+10)
<span>The width = x+2
∴ Length = area / width = </span>[ <span>(x+2)(x+10) ] / (x+2) = x+10
Part B: </span>
<span>A 2-foot walkway is built around the fountain
</span>
<span>∴ The width = (x+2) + 2 + 2 = x + 6
The length = (x+10) + 2 + 2 = x +14
Part C:
</span><span>the total area covered by the fountain and walkway.
</span><span>
= (x+6)(x+14)
= x² + 20 x + 84
See the attache figure for more explanation
</span>
Solve Let's solve your equation step-by-step.5+3.9x−8.15x25x=0
Step 1: Simplify both sides of the equation.−0.326x2+3.9x+5=0
Step 2: Use quadratic formula with a=-0.326, b=3.9, c=5.x=−b±sqrt(b2−4ac)2ax=−(3.9)±sqrt((3.9)2−4(−0.326)(5))2(−0.326)x=−3.9±sqrt(21.73)−0.652x=−1.1680135096973403,13.131203693746418Answer:<span>x=
−1.1680135096973403,13.131203693746418</span>
D i think but not really sure maybe idk
The number of boys is:
30 - 12 = 18.
18 boys* (1/3)= 6 boys
There are 6 boys who study history.
6 students/ 30 students= 1/5.
1/5 of the students are boys who study history~