Question

what is 5(3/10)²-3(3/10)+2

Answer 1

First thing I'd do is factor out 1/10^2. Then your expression is equal to
\[ \frac{1}{10^2} [ 5(3^2) - 3(3)(10) + 2(10^2) ] \]
So far so good?

Answer 2

wao thats complicated

Answer 3

Well, now the expression in square brackets is
\[ 45 - 90 + 200 = 155 \]
Yes?

Answer 4

ok yes but... can u show me why its in brackets, and isnt that like reverse simplifying?

Answer 5

oh wait nvm i get it

Answer 6

I just put the numbers in ( ) type brackets to emphasize we're multiplying them. The square brackets [ ] I used so there wouldn't be so many round brackets.

Answer 7

Now that means the entire expression is
\[ \frac{155}{10^2} = \frac{155}{100} \]
Now you just need to simplify that.

Answer 8

yeah ok... not hard at all

Answer 9

is that... 1
?

Answer 10

Is \[ \frac{155}{100} = 1 \ \ \ ??!? \] No way.

Answer 11

oh wait nvm umm
15.5? no way 1.55?

Answer 12

i think its 1.55?

Answer 13

your final answer is ... yes, correct.

Answer 14

wooo thanks