54.3k views
5 votes
Is x = 4 a solution of -2x(-4x^2-8)-4x = 524?

a) True
b) False

User Teffi
by
7.7k points

1 Answer

0 votes

Final answer:

To determine if x = 4 is a solution of the equation -2x(-4x^2-8)-4x = 524, we substitute x = 4 into the equation and check if both sides are equal.

Step-by-step explanation:

To determine if x = 4 is a solution of the equation -2x(-4x^2-8)-4x = 524, we substitute x = 4 into the equation and check if both sides are equal.

Substituting x = 4, we get:

  • -2(4)(-4(4)^2-8)-4(4) = 524
  • -2(4)(-4(16)-8)-4(4) = 524
  • -2(4)(-64-8)-4(4) = 524
  • -2(4)(-72)-4(4) = 524
  • -2(4)(-72)-16 = 524
  • -8(-72)-16 = 524
  • 576-16 = 524
  • 560 = 524

Since 560 is not equal to 524, x = 4 is not a solution of the equation. Therefore, the correct answer is b) False.

User Abramlimpin
by
7.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories