Algebra I Drill 1, Problem 3. Solve the equation.
|Algebra I||Simplifying one-variable equations|
|CAHSEE Math||Algebra I|
Let’s figure out where we are by rewriting the equation…
plugging in that “1 over 12” where x is…
…so we can be rid of that nasty variable.
We do that and that gets us negative one over the square root of one over 12.
Yeah, an UGLY fraction.
We need to simplify with… mathematical make-up.
Remember that dividing by a fraction is the same as multiplying by its inverse…
…so we take the 1 over the square root of 12 and flip it over – multiply it by the
numerator and we get negative square root of 12.
Ok, much prettier Now we can simplify a bit further…
12 is 4 times 3 and we can rewrite it as the square root of 4 times the square root of 3.
Well, the square root of 4 is 2… so we have negative 2 times the square root of 3…
…and or answer is A.
As in, “Autumn.”