Question

Tutorial:
Basic Multiplication Rules With Signs.

Answer 1

here we go....
Most of the students get confused while multiplying negative numbers.
Here is a easy way to get through these confusions

Answer 2

\(\Large\color{red}{Positive}\) \(\Large\ X \) \(\Large\color{red}{Positive}\) \[\Large=\]
\(\huge\color{purple}{Positive}\)

Answer 3

For example:
\[\huge\color{red}5\ X\ \color{red}5\ =\color{purple}{25}\]
\[\huge\color{red}3\ X\ \color{red}6\ =\color{purple}{18}\]

Answer 4

\(\Large\color{red}{Positive}\) \(\Large\ X\) \(\Large\color{blue}{Negative}\) \[\Large=\]

\(\huge\color{purple}{Negative} \)

Answer 5

For example:
\[\huge\color{red}5\ X\ \color{blue}{(-5)}\ =\ \color{purple} {-25}\]
\[\huge\color{red}7\ X\ \color{blue}{(-3)}\ =\ \color{purple} {-21}\]

Answer 6

\(\Large\color{blue}{Negative}\) \(\Large\ X\) \(\Large\color{blue}{Negative}\) \[\Large=\]

\(\huge\color{purple}{Positive} \)

Answer 7

\[\huge\color{blue}{-12}\ \ X\ \huge\color{blue}{-2} =\ \huge\color{purple}{24}\]

\[\huge\color{blue}{-4}\ \ \ X\ \huge\color{blue}{-11} =\ \huge\color{purple}{44}\]

Answer 8

\(\Large\color{blue}{Negative}\) \(\Large\ X \) \(\Large\color{red}{Positive}\) \[\large=\]

\(\huge\color{purple}{Negative} \)

Answer 9

For example:
\[\huge\color{blue}{(-8)}\ X\ \huge\color{red}{6}\ =\ \huge\color{purple}{(-48)}\]

\[\huge\color{blue}{(-9)}\ X\ \huge\color{red}{7}\ =\ \huge\color{purple}{(-63)}\]

Answer 10

Nice! Keep up the good work!

Answer 11

Welcome!

Answer 12

they tend to forget them because they are taught to memorize a rule instead of work the math.

a + a + a + a + a + a + a + a + a + a + ... + a = k
|-------------- n times --------------|

mathmatikers like to do things quickly, and adding up a bunch of the same number over and over again gets tiresome. So they learned to do multiplication.

na = k
-------------------------------------------
if 'a' is a positive number, the result positive.

if 'a' is a negative number, the result is negative.
-------------------------------------------

so the question is: what does it mean when 'n' is negative? What does counting in the opposite direction do for us? well, it gives us an 'opposite' result.

n(+a) = +k; if we count in the opposite direction we get a negative result
-n(+a) = -k

n(-a) = -k; if we count in the opposite direction we get a negative result
-n(-a) = +k

Answer 13

mistyped on the last 2 lines ... figures lol

n(-a) = -k; if we count in the opposite direction we get a positive result
-n(-a) = +k ^^^^^^^

Answer 14

haha
@amistre64
nice one :)

Answer 15

good job!!!!!

Answer 16

\(\huge\color{orange}{Like\ terms} \) \[\huge=\] \(\huge\color{purple}{Always\ positive}\)

Answer 17

\(\huge\color{darkgreen}{Unlike\ terms}\) \[\huge=\] \(\huge\color{purple}{Always\ Negative}\)

Answer 18

Good job :)

Answer 19

if A \(\large\color{green}{{\rm negative }}\) number raised to an \(\large\color{green}{{\rm odd}}\) power, answer ALWAYS! = \(\large\color{red}{{\rm negative~ number }}\)
for example \[\huge\rm (-2)^3\] is same as \[(-3) \times (-3) \times (-3)= -27\]
and
if A \(\large\color{green}{{\rm negative }}\) number raised to an \(\large\color{green}{{\rm even }}\) power, answer ALWAYS! = \(\large\color{red}{{\rm positive ~ number }}\)\[\huge\rm (-2)^2 \] is same as \[(-2) \times (-2) = 4\]
\[(-94)^{71}= \rm {Negative~ answer }\] \[(-7809)^{48}= \rm{positive ~ answer}\]
:-) gO_Od job!!! @rvc :-)
i'm posting these basic stuff hope you don't mind

Answer 20

good tutorial

Answer 21

excellent

Answer 22

thank you @YanaSidlinskiy @Michele_Laino @TheSmartOne @Nnesha @AlexandervonHumboldt2 @triciaal

Answer 23

looks like you dont need help with nothing

Answer 24

Im saying it looks like you running things in this post

Answer 25

basic multiplication is easy like 1,2,3

Answer 26

@rvc is aweeesomeeeeee

Answer 27

thanks!
:)