Math 9 Midterm Review

Question 1:

Chapter 3 review pg. 120 q 18 c

(2)6 (2)2 – 13 x 2  0 / (-1 + 2  2) 5

2 to the power of 6 and 2 to the power of 2 minus 13 times 2 to the power of 0 over negative 1 plus 2 to the power of 2 to the power of 5.

solve?

first rewrite 2 to the power of 0 as 1, and then rewrite terms that are multiplied 1 as the term. 2 to the power of 6 equals 64 so replace, also replace 2 to the power of 2 to get 4. Then multiply 64.4 to get 256 then minus 256 and 13 to get 243. 2 to the power of 2 equals 4 then add  -1 and 4 to get 3. 3 to the power of 5 equals 243 and now you have 243 over 243 and simplify to get 1.

https://www.freemathhelp.com/exponents.html

http://www.purplemath.com/modules/exponent.htm

https://www.khanacademy.org/math/in-eighth-grade-math/exponents-powers-1/laws-exponents/v/exponent-rules-part-1

Question 2:

Chapter 3 review pg. 120 q 18 d

(-10)10 + (-22)0 – ( 3 / 5 )2

negative 1 to the power of 10 plus negative 22 to the power of 0 minus 3 over 5 to the power of 2.

solve?

first, -22 to the power of 0 is the same as 1 so rewrite, then solve -1 to the power of 10 is 1. Group together any like terms, so you will have 1 + 1 and minus 3 / 5 to the power of 2. Add 1 +1 to get 2, then you have 2 – 3/5 to the power 2. Solve and then you will have 1 and 16 / 25.

https://www.mathsisfun.com/algebra/exponents-using.html

http://tutorial.math.lamar.edu/Classes/Alg/IntegerExponents.aspx

I had most of my difficulties with exponents and mostly with questions that included fractions. I visited different websites and viewed a video which helped gain me a better understanding of the material and in return helped me solve the problems that I was having difficulty with. Another very important help that I had to solve my questions, I refer to the app constantly to check my answers in school work. The app not only confirms your answers but it also provides a step by step explanation and further detail on why each step is needed it also provides multiple videos, often from Khan academy and website options it also does a google search for you. The app allows you to simply take a picture of your question in your text book or note book or to type the question out, it also helps with science questions. The app is called SoCratic, https://socratic.org/

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