sydneeyoung13 sydneeyoung13
  • 02-03-2022
  • Mathematics
contestada

The sum of the square of a positive number and the square of 2 more than the number is 20. What is the number?

Respuesta :

the10legendgamer
the10legendgamer the10legendgamer
  • 02-03-2022

Answer:

Let one number = x

Let the other number = x + 2

Use these variables to establish appropriate equations.

x2 + (x + 2)2 = 52

Solve for x from this equation. Expand any terms to get rid of parentheses.

x2 + x2 + 4x + 4 = 52

Combine any like terms.

2x2 + 4x - 48 = 0

WE now have a quadratic equation. Factor out a 2.

2(x2 + 2x - 24) = 0

Factor completely.

2(x + 6)(x - 4) = 0

Set the binomial factors equal to zero.

x + 6 = 0 and x - 4 = 0

Solve for x from these parts. Choose the positive x value.

Answer Link

Otras preguntas

Input value of which f (x)=3
1. During a field trip, 60 students are put into equal-sized groups. - Describe two ways to interpret 60:5 in this context. - Find the quotient. - Explain what
x^2-5x=14 solve for x
Evaluate each expression for a = 4, b = 2, and c = 7.7. 5b³8. 5 + 6c​
What are the roots of x^2 -5x-4=0
80 Point Offer, Help is required on these questions. Highest offer I've given.
Madhu's age is 3 times Sanku's age and difference between their ages is 14. Then find their ages?
Write a fraction greater than 1 for the parts that are shaded. + a mixed #. Please I need an answer for all of them
Although the lines are blurring, the "many-to-many" media transmission function is largely the domain of ___.
The angle of elevation of a ladder leaning against a wall is 60 degree and the foot of the ladder is 4.6 m away form the wall.The length of the ladder is