annanguyen360 annanguyen360

02-08-2020
Mathematics

contestada

Find the zeros of y = x2 - 8x - 3 by completing the square.
O A. x=3+√7
B. X = +3
C. X = 4 + 119
O D. X= -4 + 119

Respuesta :

CSMedrano CSMedrano

02-08-2020

Answer:

Assuming that you meant 4+√19 is C.

Step-by-step explanation:

[tex]x^2-8x-3=x^2-2(4)x-3=x^2-2(4)x+16-3-16\\(x-4)^2-19\\(x-4)^2-19=0\\(x+4)^2=19\\x+4=\sqrt{19} \\x=-4+-\sqrt{19}[/tex]

Answer Link

camrynleaks61 camrynleaks61

17-09-2020

B. X=+3 by completing the square

Answer Link

Otras preguntas

Emboldened by the election of president ulysses grant, who supported the congressional reconstruction agenda, congress passed the fifteenth amendment that

The plate is rotated 90° about the origin in the counterclockwise direction. In the image trapezoid, what are the coordinates of the endpoints of the side congr

Why are psychology courses often requirements of so many different programs of study?

The coordinates of points A and L are -4 and 16, respectively. What is the coordinate of the midpoint between them? A. 6 B. 4 C. 2 D. 0

How to solve and graph y>-1 and y>3

A kite is currently flying at an altitude of 19 meters above the ground. If the angle of elevation from the ground to the kite is 33 degrees find the length of

Unmasking assumptions by looking at underlying patterns is referred to as

At an average speed of 24.6 m/s, how far do you travel in one day

A boy standing on the deck of a bridge sees a motorboat approaching in the water below at a constant rate of speed. When the boat is 27 meters from the bridge,

The ruler who showed the jews great favor was: