mariinaaaa mariinaaaa
  • 16-07-2019
  • Mathematics
contestada

What are the factors of x^2 - 81
(X + 9)(x -9)
(x-9)(x -9)
(x + 3)(x - 27)
Prime

What are the factors of x2 81 X 9x 9 x9x 9 x 3x 27 Prime class=

Respuesta :

Аноним Аноним
  • 16-07-2019

Answer:

A. x-9 and x+9 because these are perfect squares. 9 times -9 is -81. x times x is x^2. 9 + -9 is 0

Answer Link
faithwinford12
faithwinford12 faithwinford12
  • 16-07-2019
(x-9)(x+9)

x^2-81

Write the number in exponential form with an exponent of 2

x^2-9^2

Use a^2-b^2=(a-b)(a+b)
(x-9)(x+9)
Answer Link

Otras preguntas

I am a number that tells how many times the bass is used as a factor
What message might these frequent and violent changes leadership have sent to people living outside Roman Empire
Decaying uranium atoms in Earth’s crust result in _____. a. U-235 b.explosions c. high-level waste d. radon gas
State three evidences that the particles of substances are in continuous motion
what is 14.62 to the nearest whole number
The area of a square mirror is 256 squared inches. A rectangle mirror has a width the same as the square mirror's width. It's Length is two inches longer than i
What were the major port cities in the 13 colonies
9 more than the quotient of -36 and -4
why reaction force must exist
songhai was best known for a