Answer:
C) 3(x+7)²
Step-by-step explanation:
<em>The</em><em> </em><em>clock</em><em> </em><em>says</em><em> </em><em>4</em><em>:</em><em>3</em><em>o</em><em> </em><em>am</em><em>/</em><em>pm</em><em> </em><em>as</em><em> </em><em>big</em><em> </em><em>one</em><em> </em><em>is</em><em> </em><em>at</em><em> </em><em> </em><em>6</em><em> </em><em>and</em><em> </em><em>small</em><em> </em><em>near</em><em> </em><em>4</em>
19 has 2 factors (1,19)
21 has 4 factors (1,3,7,21)
23 has 2 factors (1,23)
25 has 3 factors (1,5,25)
you need the nearest number 25 that has 5 factors or more :28(1,2,4,7,14,28)
If you wash 4 cars you would get $20
Each of these roots can be expressed as a binomial:
(x+1)=0, which solves to -1
(x-3)=0, which solves to 3
(x-3i)=0 which solves to 3i
(x+3i)=0, which solves to -3i
There are four roots, so our final equation will have x^4 as the least degree
Multiply them together. I'll multiply the i binomials first:
(x-3i)(x+3i) = x²+3ix-3ix-9i²
x²-9i²
x²+9 [since i²=-1]
Now I'll multiply the first two binomials together:
(x+1)(x-3) = x²-3x+x-3
x²-2x-3
Lastly, we'll multiply the two derived terms together:
(x²+9)(x²-2x-3) [from the binomial, I'll distribute the first term, then the second term, and I'll stack them so we can simply add like terms together]
x^4 -2x³-3x²
<u> +9x²-18x-27</u>
x^4-2x³+6x²-18x-27
