Answered

Welcome to Westonci.ca, where you can find answers to all your questions from a community of experienced professionals. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

x2 + 14 = 18
A) 5,-5
B) 4,-4
C) 2,-2

Sagot :

shahdshaker203

Answer:

answer should be 2

Step-by-step explanation:

2^2+14=18

sqdancefan

Answer:

  C) 2, -2

Step-by-step explanation:

When you subtract 14 from both sides of the equation, you are left with ...

  x^2 = 4

Taking the square root of both sides gives ...

  x = ±√4 = ±2

Solutions are x = 2, x = -2.

_____

Alternate solution

Subtract 18 from both sides of the equation.

  x^2 -4 = 0

  (x -2)(x +2) = 0 . . . . . factor the differenc   x = 2, x = -2e of squares

. . . . . . values of x that make the factors zero

The zero product rule tells you the product is only zero if one or more of the factors is zero.

Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.