MathMaster logo

MathMaster

  1. Home
  2. general
  3. expand 3x 1 3x 1
Question

Expand (3x − 1)(3x + 1)

102

likes
509 views

Answer to a math question Expand (3x − 1)(3x + 1)

Expert avatar
Velda
4.5
110 Answers
Use foil method \left(3x\right)\left(3x\right)+3x\left(1\right)+\left(-1\right)\left(3x\right)+\left(-1\right)\left(1\right) 9x^2+3x-3x-1 Combine like terms Answer\:=\:9x^2-1

Frequently asked questions (FAQs)
Question: Use the Fundamental Theorem of Calculus to find the derivative of ∫[0 to x^3] (t^2 + sin(t)) dt, where x > 0.
+
What is the resultant displacement of two vectors, A = 4i + 3j - 2k and B = 2i - j + 5k?
+
Question: What is the limit of (3x^2 + 4x + 5) / (x^2 + x - 6) as x approaches 2?
+
New questions in Mathematics
11(4x-9)= -319
5/8 x 64
What is the amount of interest of 75,000 at 3.45% per year, at the end of 12 years and 6 months?
Use the elimination to find the solution to each linear system. X+y=43 2x-y=20
a bank finds that the balances in its savings accounts are normally distributed with a mean of $500 and a standard deviation off of $40. What is the probability that a randomly selected account has a balance of more than $400?
4.2x10^_6 convert to standard notation
4x567
Suppose 56% of politicians are lawyers if a random sample of size 873 is selected, what is the probability that the proportion of politicians who are lawyers will be less than 55% round your answer to four decimal places
how many arrangements can be made of 4 letters chosen from the letters of the world ABSOLUTE in which the S and U appear together
Use the power rule for logarithms to solve the following word problem exactly. If you invest $1, 000 at 5% interest compounded annually, how many years will it take before you have $2,000?
A machine produces 255 bolts in 24 minutes. At the same rate, how many bolts would be produced in 40 minutes?
-1%2F2x-4%3D18
Show work on 4108 divided by 4
Determine a general formula​ (or formulas) for the solution to the following equation.​ Then, determine the specific solutions​ (if any) on the interval [0,2π). cos30=0
-5x=115
Consider mixing 150 ml, 0.1M, HCI with 100 ml, 0.2M, KOH solution. Determine the pH of final solution.
The blood types of individuals in society are as follows: A: 30%, B: 25%, AB: 20%, 0: 25%. It is known that the rates of contracting a certain disease according to blood groups are as follows: A: 7%, B: 6%, AB: 7%, 0: 4%. Accordingly, if a person selected by chance is known to have this disease, what is the probability of having blood group O?
The slope of the tangent line to the curve f(x)=4tan x at the point (π/4,4)
calculate the product of 4 and 1/8
A gas is leaking at 3.5ft3/min in a room of 2.9m by 6.9ft by 15.7m. How long would it take (in seconds) for 22% of the room to reach the LFL, if the gas has a LFL of 2.51%?

You might be interested in