TrequanThaDon TrequanThaDon

17-08-2017
Mathematics

contestada

When factored, the trinomials x^2-2x-15 and x^2-9x+20 have one binomial factor in common. What is this factor?
1. x-7
2. x+7
3. x-5
4. x+5

Respuesta :

kphung76127 kphung76127

17-08-2017

x^2-2x-15
(x-5)(x+3)

Proof:
-5+3=-2
-5*3=-15

x^2-9x+20
(x-4)(x-5)

Proof:
-4-5=-9
-4*-5=20

Final answer: (x-5)

Answer Link

Otras preguntas

The quotient of triple a number less four and five equals two. What is the number?

Determine whether each sequence is an arithmetic sequence. Explain. -26, -22, -18, -14, ...

Traditional antibiotics build immunity by exposing the memory cells of our body to inactive versions of viruses or bacteria. True False

Tutorial questions (1) :calculate the pressure exerted by 0.300mol of acidic acidin 2L container at 40°C.where a = 17.71atm /Lmol ,b=0.237L.Finf (a)Ideal gas pr

Jumping is a largely unimportant game mechanic, especially in platform games. True False

the quotient of a number and 3 decreased by 10 is "-5"

What is the correct answer?

A binary number is to be transformed by appending three 0s to the end of the number. For example, 11101 is transformed to 11101000. Which of the following corre

What best describes how the plants domesticated in China and the Middle East?

Sam's mother is twice Sam's age. in 5 years she will be three times older than Sam was 5 years ago. How old are they each now?