3x+5 = a
a * 6x = 18x^2 + 30x
R = 15x + 29
a * 5 = 15x + 25
R = 4
answer: 6x + 5; R = 4
math is a subject that was made to ... umm... torture kids & make them mentally depressed!! kidding...so NOT!
Answer:


Step-by-step explanation:
<u>Given function</u>:

If (x + 2) is a factor then:

Expand:



To find <em>a</em>, compare the coefficients of x³:

To find <em>b</em>, substitute the found value of <em>a</em> into the coefficient for x² and compare:



To find <em>c</em>, compare the constants:


Therefore:

Now factor (3x²-8x+5):



Therefore the factored function is:

<u>Zero Product Property</u>

To find the zeros, set each factor equal to zero and solve for x:



Therefore, the zeros of the function are:

Answer:
The temperature at midnight is -12 degree Celsius
Step-by-step explanation:
Given -
Temperature at 6:00 PM = -20 degree Celsius
Let the temperature at midnight be X degree Celsius
From midnight to 6:00 am, the temperature rose by 8 degree Celsius
X - (-20) = 8
X = 8-20
X = -12 degree Celsius.
The temperature at midnight is -12 degree Celsius.