Home > Algebra > Comparing Methods for Solving Quadratics

How do you solve #36x^2 - 140 = 4#?

Answer 1

Eli Assouline

#x=+-2#

#36x^2-140=4# or #36x^2=140+4# or #36x^2=144# or #x^2=144/36# or #x^2=4# or #x=sqrt4# or #x=+-2#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Eva Abramson

To solve the equation 36x^2 - 140 = 4:

Add 140 to both sides of the equation to isolate the quadratic term: 36x^2 = 144
Divide both sides of the equation by 36: x^2 = 4
Take the square root of both sides of the equation: x = ±√4
Simplify the square root of 4: x = ±2

Therefore, the solutions to the equation are x = 2 and x = -2.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.