## anonymous one year ago Simplify the expression. (10 + 1)2 – 52 A 125 B 75 C 96 D 146

1. anonymous

@geny55

2. Nnesha

$\huge\rm (10+1)^2-52$ like this /

3. Nnesha

?*

4. Nnesha

i guess it's $\huge\rm (10+1)^2 -5^2$right ?

5. Nnesha

if yes then start with the parentheses add those two numbers inthe parentheses and then take square

6. anonymous

I tried and got -41?

7. Nnesha

how did you get -41? explain plz :=)

8. anonymous

well you said to do that problem right^ ? well I tried it anyways (10+1) 2 - 52 and got -41 but im not sure if im doing it right cause that is not an option and at first I thought that it would be 75 which is option b , so im a little confused , am I right on b? cause I couldn figure out but I looked out for some help , but I don't know 100% if they are sure

9. Nnesha

what was ur first step ?

10. anonymous

well my first step was to do (10 + 1) first and I got 11 and then my next step was to do 2-52 which is -50 then I was thinking now to add -50 + 11 =-39 but the thing is that when I do the problem it doesn't seem to come up with an option :/

11. anonymous

hold on before you respond . let me double check please first

12. anonymous

well I still had gotten -41 but what I did is addi guess 11+ -41+ -39= -80 so I think its b for an estimate since 80 is closer but im not too sure im right , am I

13. Nnesha

2 is an exponent right ?

14. anonymous

yes

15. Nnesha

it should be (11)^2 which is same as 11 times 11 and same with 5^2 same as 5 times 2 and then subtract

16. Nnesha

$(11)^2-5^2$ 11 times 11- 5 times 5

17. anonymous

ok I did 11*11 and 5*2 then I did 121-10 and got 111

18. anonymous

no wait I did 5*5 the n I got 96

19. Nnesha

$$\huge\color{green}{\checkmark}$$

20. anonymous

so c? yea thanks!

21. Nnesha

yep no problem :=)