I need little help with these math problems. Can you please help me?

a)

4/6

4/5

When I solved it the outcome was 5/6

b) - 72 - (-7)2

I got the outcome 0.

Can you help me?

My gratitude,

Gronfeldt

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- Sep 10th 2010, 12:19 PMGronfeldtAlgebra Questions
I need little help with these math problems. Can you please help me?

a)

__4/6__

4/5

When I solved it the outcome was 5/6

b) - 72 - (-7)2

I got the outcome 0.

Can you help me?

My gratitude,

Gronfeldt - Sep 10th 2010, 12:27 PMyeKciM
- Sep 10th 2010, 12:28 PMbigwave
a) is

$\displaystyle \frac{\frac{4}{6}}{\frac{4}{5}}

\Rightarrow

\frac{4}{6}\times\frac{5}{4}

\Rightarrow

\frac{20}{24}

\Rightarrow

\frac{5}{6}

$ - Sep 11th 2010, 04:42 AMGronfeldt
- Sep 11th 2010, 04:46 AMGronfeldt
- Sep 11th 2010, 05:02 AMRHandford
Why is 7^2 14 and not 49?

- Sep 11th 2010, 09:33 AMyeKciM
heheheheheh :D:D:D

yes it is :D

lol but it's inconclusive is it $\displaystyle 7^2 $ or the $\displaystyle 7\cdot 2 $ and there one part of the brain sow it as $\displaystyle 7^2 $ and while answering second part of the brain saw it as $\displaystyle 7\cdot 2 $ so that's why that typo appear :D:D:D:D

$\displaystyle -7^2 - (-7)^2 = -49 - (+49) = -98 $

$\displaystyle -7\cdot 2 - (-7)\cdot 2 = -14 - (-14) = 0 $ - Sep 11th 2010, 10:44 AMRHandford
yeKcIm

Sorry to be pedantic but:

$\displaystyle -7^2 - (-7)^2 = -49 - (+49) = 98$?

or

$\displaystyle -7^2 - (-7)^2 = -49 - (+49) = -98$

or

$\displaystyle -7^2 - (-7)^2 = -49 - (-49) = 0$

Sorry to be a pain (Worried) - Sep 11th 2010, 11:08 AMUnknown008
$\displaystyle -7^2 - (-7)^2 = -49 -(+49) = -49 - 49 = -98$

I'm surprised this thread has gone that many posts, but the solution so much time to be obtained...