loganswain45 loganswain45
  • 23-05-2016
  • Mathematics
contestada

what are the zeros of the function f(x)=x^2-2x-15

Relax

Respuesta :

caylus
caylus caylus
  • 23-05-2016
Hello,

f(x)=x²-2x-15=x²-2x+1-16=(x-1)²-16
=(x-1-4)(x-1+4)=(x-5)(x+3)
Zeroes are x=5 or x=-3

Answer Link

Otras preguntas

which  property should be used next in this solution process 3x+2+3=7(x-1)-4
Both the leftmost digit and the rightmost digit of a four-digit number N are equal to 1. When these digits are removed, the two-digit number thus obtained is N
how do you simplify 681
Please help I don't know what to do for number 40
simplify: -3(4×-4) 7x(3+4)
Measuring the size of a spefic object might include which of these SI units?A.meter ,soundB.candela,moleC.kilogram,ampereD.meter,killogram
Who has pennfostsr answers?
Which one describes how much matter an object contains,using SI units?A.43kgB.65mC.38poundsD.89second
"He wrote the diary in a secret shorthand."Where is the simple predicate in the sentence above?
If there are 400 cubic centimeters of a chemical in 1 liter of solution, how many cubic centimeters of water must be added to dilute it to a 25% solution?