Algebra Questions

**Gronfeldt** · September 10th 2010, 12:19 PM

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

**yeKciM** · September 10th 2010, 12:27 PM

Originally Posted by Gronfeldt

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

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

**bigwave** · September 10th 2010, 12:28 PM

a) is
$\frac{\frac{4}{6}}{\frac{4}{5}} \Rightarrow \frac{4}{6}\times\frac{5}{4} \Rightarrow \frac{20}{24} \Rightarrow \frac{5}{6} $

**Gronfeldt** · September 11th 2010, 04:42 AM

Originally Posted by bigwave

a) is
$\frac{\frac{4}{6}}{\frac{4}{5}} \Rightarrow \frac{4}{6}\times\frac{5}{4} \Rightarrow \frac{20}{24} \Rightarrow \frac{5}{6} $

b) if you mean
$-\left(7\right)^2-\left(-7\right)^2 \Rightarrow -14-14 = 28 $

otherwise what was given is correct.... you should us () with problems like this. or better yet latex

Thank you for your answer, but the ( ) weren't in the second problem. It was:

-7*2-/-(-7)*2

**Gronfeldt** · September 11th 2010, 04:46 AM

Originally Posted by Gronfeldt

Thank you for your answer, but the ( ) weren't in the second problem. It was:

-7*2-/-(-7)*2

**RHandford** · September 11th 2010, 05:02 AM

Why is 7^2 14 and not 49?

**yeKciM** · September 11th 2010, 09:33 AM

Originally Posted by RHandford

Why is 7^2 14 and not 49?

heheheheheh

yes it is

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

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

$-7\cdot 2 - (-7)\cdot 2 = -14 - (-14) = 0$

**RHandford** · September 11th 2010, 10:44 AM

yeKcIm

Sorry to be pedantic but:

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

or

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

or

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

Sorry to be a pain

**Unknown008** · September 11th 2010, 11:08 AM

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

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

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