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

Which among the following are solution of the equation 2x+3y=8 a) x=0,y=5 b) x=3,y=2 c) x=-5,y=6 d) x=-1,y=-2

Subtract and reduce to lowest terms. 3 3/7 - 2 1/5= 1 1/8 1 1/35 1 4/17 None of these choices are correct.

the length of a rectangle is 3 more than twice its width. the total area of the rectangle is 54 square units. what is the width and length of the rectangle? rep

help me find the answer please?

the american musical form that developed between 1880-1900 and spoke of personal feelings of suffering, hard times, lust, and love is:

The dimensions of Flavia's studio wall are 19/7 m by 20/19 m. The price of wallpaper for 1 m^2 is £2.70. How much would Flavia need to pay to put up wallpaper o

A bag contains 7 red marbles and 4 blue marbles. A marble is taken at random from the bag and replaced. Another marble is taken from the bag. Work out the prob

There's an optimization problem for my AP Calculus class that I am stuck on: You just adopted an iguana and are trying to build a pen with a rectangular bottom

standard precautions differ from transmission-based precautions in that standard precautions

Which poetic device is used in the poem?