ICantMath ICantMath

03-10-2018
Mathematics

contestada

What number needs to be added to both sides of the equation to complete the square?
x^2-9x=8

Respuesta :

jimrgrant1 jimrgrant1

03-10-2018

[tex]\frac{81}{4}[/tex]

since the coefficient of the x² term is 1 then add

([tex]\frac{1}{2}[/tex] the coefficient of the x-term )² to both sides

x² + 2(- [tex]\frac{9}{2}[/tex] )x + [tex]\frac{81}{4}[/tex] = 8 + [tex]\frac{81}{4}[/tex]

Answer Link

Otras preguntas

Explain why volcanoes are common in the Ring of Fire.

twelve is sixteen less than four times a number

A rectangular room is four times as long as it is wide, and its perimeter is 70 meters. Find the width of the room.

twelve is sixteen less than four times a number

Evaluate the expression (11/7)(5/3)(3/1)

How many squares for three traits?

A retired couple invested $6000 in bonds. At the end of one year, they received an interest payment of $396. What was the simple interest rate of the bonds?

twelve is sixteen less than four times a number

Carmen listed the multiples of 6 as 1,2,3, and 6. Is she correct? Explain why or why not.

twelve is sixteen less than four times a number