Solve the equation algebraically.

1.

2.

3. 4.3 = sqrt 18 divided by 7

Printable View

- Aug 11th 2008, 01:02 PMcomet2000Algebraic Fractions
Solve the equation algebraically.

1.

2.

3. 4.3 = sqrt 18 divided by 7 - Aug 11th 2008, 01:11 PMChop Suey
For the first one:

Given:

Cross Multiply:

Simply/expand:

Subtract 4x from both sides:

Factor:

x = 1

Can you rewrite the second question? - Aug 11th 2008, 01:14 PMcomet2000
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. - Aug 11th 2008, 01:19 PMChop 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}. (Wink)

Given:

Multiply by the multiplicative inverse of 6.5 on both sides:

Multiply by on both sides:

Square both sides (principal of powers): - Aug 11th 2008, 01:25 PMcomet2000
- Aug 11th 2008, 04:09 PMChop Suey
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.