Thread: Algebraic Fractions

Solve the equation algebraically.

1.


2.


3. 4.3 = sqrt 18 divided by 7

For the first one:
Given:

Cross Multiply:

Simply/expand:

Subtract 4x from both sides:

Factor:

x = 1

Can you rewrite the second question?

2.
the 6.5 = is correct.
the z is a squareroot.
52 is on top.
sorry, still learning the coding for it.
don't know how to put z in squareroot.

It's better that you write \sqrt{z} instead, not sqrt[z]. If you wanted cube root though, you should write sqrt[3]{z}. The nth root is which is \sqrt[n]{x}.

Given:
Multiply by the multiplicative inverse of 6.5 on both sides:
Multiply by on both sides:
Square both sides (principal of powers):

Originally Posted by Chop Suey

It's better that you write \sqrt{z} instead, not sqrt[z]. If you wanted cube root though, you should write sqrt[3]{z}. The nth root is which is \sqrt[n]{x}.

Given:
Multiply by the multiplicative inverse of 6.5 on both sides:
Multiply by on both sides:
Square both sides (principal of powers):

hehe, thanks. = me be scare of you.
what do you mean by "multiplicative inverse"?

If x is a real number (not equal to 0), then the multiplicative inverse of x is

Don't be scared of me! I'm not really the cookie-monster, hehe.