wanderspamlust
wanderspamlust wanderspamlust
  • 26-03-2020
  • Mathematics
contestada

a^2−8ab+16b^2=81, find a–4b

Respuesta :

meowdolgov
meowdolgov meowdolgov
  • 01-04-2020

Answer:

-9, 9

Step-by-step explanation:

a² − 8ab + 16b² = 81

(a - 4b)² = 81      Wrote the left-hand side as a square

 a - 4b = ±9     Took the square root of each side

All values of a - 4b are -9 and +9.

Answer Link

Otras preguntas

Calculate the slope of a Line that intersects point (6,2) And ((-4,-3). A.1/2. B.2/3 C.4/5. D.7/8. For me the answer are a. Please help me.
The sum of two numbers is 17 and their different is 5. Find two answers
what is a 'birthday suit'?
what is a dangling modifier?
Julius Caesar, hero or tyrant?! And why????
Insert 2 irrational numbers between 2/5 and 3/4
A second baseman tosses the ball to a first baseman, who catches it a the same level from which it was thrown. The throw is made with an initial speed o 19.0 m/
What is the passive voice of "I went to a movie"
The boy was penitent and _______ to the store clerk for stealing candy.a-bragged b-apologizedc-talked d-cordial
how reliable are grammar checkers?