Evaluate a^2 + b for a = 1/2 and b = -1/2.
-1/2
-1/4
0
1/2

- anonymous

Evaluate a^2 + b for a = 1/2 and b = -1/2.
-1/2
-1/4
0
1/2

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- anonymous

@muscrat123

- muscrat123

hang on- rr break

- anonymous

okay

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## More answers

- muscrat123

okay

- anonymous

i got a or b

- muscrat123

y do u say that?

- anonymous

say what?

- muscrat123

a or b

- anonymous

because google calculator doesnt have a fraction option so i did it in decimal and got -0.25

- muscrat123

lol. dont use calculators yet

- anonymous

haha oh

- muscrat123

|dw:1436487068293:dw|

- muscrat123

.5 ^2 = ?

- anonymous

25

- muscrat123

nope

- anonymous

0.25

- muscrat123

yes

- anonymous

oh okay

- muscrat123

then do ...25 + (-....5)

- anonymous

20?

- muscrat123

no for 2 reasons
not in decimal form
and
wrong answer
and also not correct sign

- anonymous

oh

- muscrat123

fix?

- muscrat123

OK would it just b easier if i gave u the answer or do u want me to explain

- anonymous

please explain

- muscrat123

ok. im perfectly fine w that. i ask bc most of the time when i explain, the person doesnt care and they rnt paying attn

- anonymous

well i no i need to learn this stuff to graduate so i try and understand

- anonymous

*do

- muscrat123

i understand fully. what is the next ?

- anonymous

i dont understand the little number thing

- muscrat123

?

- muscrat123

little #?

- anonymous

\[x^{2}\]

- muscrat123

exponents?

- anonymous

that 2 for example i dont no what to do with those

- anonymous

yea i that

- muscrat123

when there is a # raised like that, it means to multiply the base the amount of times the exponent says|dw:1436488082351:dw|

- muscrat123

lets practice

- muscrat123

|dw:1436488171999:dw|

- anonymous

okay would that be 4 times 2 or 4 times 4 thats what confuses me

- muscrat123

\[4^{2}=what?\]

- muscrat123

if u multiply the base times itself the exponents many times, what do u think

- anonymous

16?

- muscrat123

|dw:1436488302990:dw|

- muscrat123

so yes

- muscrat123

lets try 2 more

- anonymous

okay

- muscrat123

|dw:1436488352735:dw|

- muscrat123

\[8^{4}=what? \]

- anonymous

top one is 4096
other is 216

- muscrat123

correct!! now lets try an example of adding, subtracting, multiplying and dividing with exponents

- anonymous

okay

- muscrat123

we probably wont get to x and / tho

- muscrat123

|dw:1436488597206:dw|

- anonymous

844279

- muscrat123

did u use a calculator?

- muscrat123

b honest

- anonymous

yes

- anonymous

i cant mutiply right of the top of my head

- muscrat123

no words

- muscrat123

use paper!!!

- muscrat123

i havent used a calculator yet and im in 7th grade.

- anonymous

how do you no this stuff then?

- muscrat123

bc i take college level classes

- muscrat123

ive known this stuff since 3rd grade i believe

- anonymous

wow

- muscrat123

since u used a calculator, lets try another one, but ill make it easier.
USE PAPER!

- anonymous

haha okay

- muscrat123

|dw:1436488985874:dw|

- anonymous

\[3\times3\times3 = 27 \]

- anonymous

then \[4\times4\times4\times4\times4 \]

- muscrat123

yes, add them

- anonymous

1024

- anonymous

that doesnt look right

- muscrat123

it would be 3 x 3 x 3 + 4 x 4 x 4 x 4 x 4 = ?
and i believe u are correct, but only for 4^5

- muscrat123

when u c this
4^5 ^^^^
it means it is an exponent in case u didnt know

- anonymous

i no that

- anonymous

its 27 because 3+3+3 is nine then 9 times 3 is 27

- muscrat123

yes. 1024 + 27 = final answer

- muscrat123

and u used PAPER right?

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