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)
How many ways can you arrange the letters of the word "MATH" using all the letters?
+
What are the key characteristics of a hyperbola in terms of its asymptotes, foci, vertices, and eccentricity?
+
What is the measure of angle A if Triangle ABC ≅ Triangle XYZ and angle A = 60°?
+
New questions in Mathematics
The random variable Y is defined as the sum between two different integers selected at random between -4 and 2 (both included). What are the possible values of the random variable Y? What is the value of P(Y=-3)? And whether it is less than or equal to -5?
In a random sample of 600 families in the Metropolitan Region that have cable television service, it is found that 460 are subscribed to the Soccer Channel (CDF). How large a sample is required to be if we want to be 95% confident that the estimate of “p” is within 0.03?
What payment 7 months from now would be equivalent in value to a $3,300 payment due 23 months from now? The value of money is 2.7% simple interest. Round your answer to 2 decimal places. Show all work and how you arrive at the answer..
A client did not advance L 10,000 for the rental of a parking area and it corresponds to 4 months, of which 2 months were consumed
If L = (-2, -5) is reflected across y= -4 , what are the coordinates of L?
1 plus 1
Margin of error E=0.30 populations standard deviation =2.5. Population means with 95% confidence. What I the required sample size (round up to the whole number)
Divide 22 by 5 solve it by array and an area model
Reparameterize the curve r(t)= cos(t)i without (t)j (t)k by the arc length.
78 percent to a decimal
A pair of die is thrown and the absolute difference of the two scores is recorded. What is the probability of the absolute difference being 4 or more?
4x/2+5x-3/6=7/8-1/4-x
User The average height of Aranka, Böske, Cili, Delinke and Lili is 172 cm. We know that Aranka and Cili are both 172 cm tall. The sum of the heights of Böské and Delinke is 336 cm. How tall is Lili?
19) If the temperature of -8°C decreases by 12°C, how much will it be? a)-20°C -4°C c) 4°C d) 20°C
MAKING AN ARGUMENT You use synthetic division to divide f(x) by (x − a) and find that the remainder equals 15. Your friend concludes that f (15) = a. Is your friend correct? Explain your reasoning.
Oi👋🏻 Toque em "Criar Nova Tarefa" para enviar seu problema de matemática. Um dos nossos especialistas começará a trabalhar nisso imediatamente!
A confidence interval for a population mean has a margin of error of 3.5. a. Determine the length of the confidence interval. b. If the sample mean is 47.8 ​, obtain the confidence interval. a. The length of the confidence interval is?
The mean of 4 numbers is 5 and the mean of 3 different numbers is 12. What is the mean of the 7 numbers together? Produce an algebraic solution. Guess and check is acceptable.
How many moles are there in 235 grams of potassium thiosulfate pentahydrate? K2S2O3*5(H2O)
The slope of the tangent line to the curve f(x)=4tan x at the point (π/4,4)

You might be interested in