asaadfatma asaadfatma

04-02-2017
Mathematics

contestada

4x²-17x-42 by factor

Respuesta :

surjithayer surjithayer

10-02-2017

4x²-17x-42
=4(x²-17/4x)-42
=4[x²-17/4 x+(-17/8)²-(-17/8)²]-42
=4(x-17/8)²-289/64-42
=4(x-17/8)²-(289+2688)/64
=4(x-17/8)²-2974/64
=[(2x-34/8)²-(√2974/8)²]
=(2x-34/8 +(√2974/8))(2x-34/8-(√2974/8)
=[2x+(√2974-34)/8][2x-(√2974+34)/8]

Answer Link

Otras preguntas

This is a key event in The Call of the Wild. Thornton knelt down by Buck’s side. He took his head in his two hands and rested cheek on cheek. He did not playfu

Sketch the graph of each linear inequality greater sign has to have a line underneath it Y<-6/5x-1

Why do the cells in all living things need energy? A. to fuel their chemical reactions B. to help them decompose C. to communicate with other cells D. so they c

Which desert does the Huang river curve around

The brilliant Carthaginian general _______ led war elephants and soldiers through the Alps to attack Rome from the north.

Which of the following cell organelles surrounds the nuclear membrane? A; rough endoplasmic reticulum B; smooth endoplasmic reticulum C; the Golgi apparatus

Where is a rift valley most likely to occur? A. at a divergent boundary in an oceanic plate B. at a convergent boundary between two continental plates C. at a d

Which phrase best describes osmosis? A. the process where DNA is created B. the movement of molecules through the cell membrane C. the division process of the c

Which statement about the cell wall is true? a. It controls protein synthesis. b. It gives the animal cell its shape. c. It is surrounded by the cell membrane.

Which organization helped provide legal assistance to the families taking part in the case of Brown v. Board of Education? A) the National Collegiate Athletics