spencergosnell
spencergosnell spencergosnell
  • 02-05-2019
  • Mathematics
contestada

Solve the quadratic equation for x. What is one of the roots?

(x + 6)2 = 49

A) −13
B) −6
C) −7
D) −1

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-05-2019

Answer:

A) −13

Step-by-step explanation:

(x + 6)^2 = 49

Take the square root of each side

sqrt((x + 6)^2) = ±sqrt(49)

x+6 = ±7

Subtract 6 from each side

x+6-6 = -6  ±7

x =-6  ±7

Separating into 2 parts

x = -6+7          x = -6-7

x = 1               x = -13

Answer Link

Otras preguntas

a subway train starts from rest at a station and accelerates uniformly at 1.8m/s^2 for 15 sec. then it runs at a constant speed for the next 35 sec. before dece
What's the other word a weak or lifeless feeling
Your friend is asked to differentiate between evaporation and boiling.what questions could you ask to make him to know the difference between evaporation and bo
What's the word for looking down on others; proud and scornful
What's the word for wandering about; tending to move around, travel
What's the word for wandering about; tending to move around, travel
What's the other word stubborn; inflexible
What's the other term for: explosive or changing very quickly
Solve the quadratic by factoring 2X²-2X-12=0
A sound wave of 70 cm travels 840 m in 2.5 sec. What is the velocity and frequency of sound?