hi,
you must replace x by the number between parenthese.
I show you with the first one and let you do the second one
p(x) = 11x^5 -11x^4 - 5x^2 +15x-8
p(-4) = 11 (-4)^5 - 11 (-4)^4 -5(-4)² +15(-4) -8
p(-4) = 11 ( -1024- 256) - 5*16 -60-8
p(-4) = 11 ( -1280) -80-60-8
p(-4) = - 14080 - 148
p(-4) = - 14 228
Step-by-step explanation:
f(x)=3x3−21x2+36xf(x)=3x3-21x2+36x
Set 3x3−21x2+36x3x3-21x2+36x equal to 00.
3x3−21x2+36x=03x3-21x2+36x=0
by Solving for x
x=0,4,3
Answer:
6am and 9am
I don't have an explination on this but this is the answer if your on khan acedemy
1) subtract 8 to both sides
2) a=5
Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.