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

It is significant because since the Battle of Puebla no country in the Americas has been invaded by an army from another continent. True or False?

The moon has a shape of what geometric solid?

please l need help with this system of equation. Solve the system by the method of substitution. 3/2× +3/4y =16 3/4×-y =4 (×,y)=?

What effect do the forceful, rhythmic meter and repetition of phrases such as "half a league" and "cannon to the right" have in "The Charge of the Light Brigade

In a vacuum, X-rays and gamma rays have the same?

What was Hammurabi's most important achievement as the ruler of Babylon? A. He built extensive canals, which carried water to many parts of his kingdom. B. He e

What is the difference between true ribs, false ribs, and floating ribs

Which of the following is an example of convection? a a hot object transferring heat to a cooler one b the rays of the Sun warming the earth c a hot oven warmin

what is the science name for table salt

_____________ is/are necessary for evaporation to occur. a Sublimation b Dry conditions c Transpiration d Heat