Question

The product of two consecutive even integers is 8 less than five times their sum. Find the two integers

114

likes
570 views

Answer to a math question The product of two consecutive even integers is 8 less than five times their sum. Find the two integers

Expert avatar
Ali
4.4
92 Answers
Let the two consecutive even integers be x and x+2.

Their product is given by:

x(x+2)

The sum of the integers is:

x + (x+2) = 2x + 2

Five times their sum is:

5(2x + 2) = 10x + 10

According to the problem, the product is 8 less than five times their sum:

x(x+2) = 10x + 10 - 8

Simplifying, we have:

x(x+2) = 10x + 2

This expands to:

x^2 + 2x = 10x + 2

Rearranging, we get:

x^2 + 2x - 10x - 2 = 0

Simplifying, we have:

x^2 - 8x - 2 = 0

Solve this quadratic equation using the quadratic formula x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where a = 1, b = -8, and c = -2:

x = \frac{-(-8) \pm \sqrt{(-8)^2 - 4(1)(-2)}}{2(1)}

x = \frac{8 \pm \sqrt{64 + 8}}{2}

x = \frac{8 \pm \sqrt{72}}{2}

x = \frac{8 \pm \sqrt{36 \times 2}}{2}

x = \frac{8 \pm 6\sqrt{2}}{2}

Continuing to simplify gives us:

x = 4 \pm 3\sqrt{2}

Since the solutions involve square roots, there are no integer solutions to the problem.

Frequently asked questions (FAQs)
Math question: Graph the inequality y > 2x + 3. Find the solution set and shade the region above the line.
+
What is the area of a square with a side length of 8 units?
+
What is the value of sin(pi)?
+
New questions in Mathematics
-442/c+5=26 what is c?
-6n+5=-13
A college believes that 22% of applicants to that school have parents who have remarried. How large a sample is needed to estimate the true proportion of students who have parents who have remarried to within 5 percentage points?
12-6x=4x+2
Convert 78 percent to a decimal
Find the equation of the line perpendicular to −5𝑥−3𝑦+5=0 passing through the point (0,−2)
How many anagrams of the word STROMEC there that do not contain STROM, MOST, MOC or CEST as a subword? By subword is meant anything that is created by omitting some letters - for example, the word EMROSCT contains both MOC and MOST as subwords.
How many anagrams of the word SROMEC there that do not contain STROM, MOST, MOC or CEST as a subword? By subword is meant anything that is created by omitting some letters - for example, the word EMROSCT contains both MOC and MOST as subwords.
suppose random variable x follows poisson distribution with expected value 3. what is variance of x?
It is known that the content of milk that is actually in a bag distributes normally with an average of 900 grams and variance 25 square grams. Suppose that the cost in pesos of a bag of milk is given by 𝐶(𝑥) = { 3800 𝑠𝑖 𝑥 ≤ 890 4500 𝑠𝑖 𝑥 > 890 Find the expected cost.
89, ÷ 10
If X1 and X2 are independent standard normal variables, find P(X1^2 + X2^2 > 2.41)
Convert 9/13 to a percent
Give an example of a function defined in R that is continuous in all points, except in the set Z of integers.
How to convert 45 kg into grams
Two particles of electrical charges Q1=3.8×10-⁶C and q,=4.4×10-⁶C are separated in vacuum by a distance of 4.0.10-⁸ m. Since K=9.0.10⁹ N.m²/C², the intensity of the interaction force between them, in newtons, is?
Solve the following 9x - 9 - 6x = 5 + 8x - 9
How much does 7.2 moles of ammonium dichromate weigh? (NH4)2Cr2O7
A group of 17 people spent 9 days on vacation and spent R$776.34 on barbecue meat and the bill needs to be divided as follows: 6 people stayed for 9 days, 7 people stayed for 4 days, and 2 people stayed for 5 days and 2 people stayed 3 days, how much does each group have to pay for the days they stayed?
Dano forgot his computer password. The password was four characters long. Dano remembered only three characters: 3, g, N. The last character was one of the numbers 3, 5, 7, 9. How many possible expansions are there for Dano's password?