y4asm0icTmastecessja
y4asm0icTmastecessja y4asm0icTmastecessja
  • 11-07-2016
  • Mathematics
contestada

which function has real zeros at x = 3 and x = 7? f(x) = x2 4x – 21 f(x) = x2 – 4x – 21 f(x) = x2 – 10x 21 f(x) = x2 – 10x – 21

Respuesta :

caylus
caylus caylus
  • 13-07-2016
Hello,

f(x)=(x-3)(x-7)=x²-10x+21

Answer C

Answer Link
erato erato
  • 24-07-2019

Answer:

Function which has real zeros at x = 3 and x = 7 is:

f(x)= x²-10x+21

Step-by-step explanation:

function has real zeros at x = 3 and x = 7

⇒ (x-3)(x-7)=0

⇒ x(x-7)-3(x-7)=0

⇒ x²-7x-3x+21=0

⇒ x²-10x+21=0

f(x)= x²-10x+21 has real zeros at x=3 and x=7

Hence, function which has real zeros at x = 3 and x = 7 is:

f(x)= x²-10x+21

Answer Link

Otras preguntas

3. The value of the expression 5.104 + 4.103 + 7.10 + 1 is equal to:
How many chromosomes does each new cell contain after mitosis if the original cell had 52 original cell chromosomes
what is 7/5 as a decimal number
What biome is New Caledonia considered?
solve using elimination, 2x+5y=2   3x-5y=53
How do plant populations in a community change over time?
Describe how the Hawaiian Islands were formed and how they are evidence for mantle plumes.
according to hamilton what are implied powers?A.powers not expressly forbidden in the constitutionB.powers that were forbidden in the constitutionC.powers that
what are three physical properties of aluminum foil
What are 3 physical properties of aluminum foil