WindsorLynne WindsorLynne

20-02-2017
Mathematics

contestada

Solve this equation using an algebraic method: (x + 4)( x - 4) = 9.

Respuesta :

SyntaxError SyntaxError

20-02-2017

Sure!

(x+4)(x-4)=9
x^2 +4x-4x - 16 =9
x^2 -16 = 9
x^2 =25
x = -5
x = 5

Answer Link

Otras preguntas

What is... 17 2/9 + 7 3/5 Thank you so much!

Triangle XYZ has vertices X(6,-2.3) Y(7.5,5) and Z(8,4) When translated X' has coordinates (2.8, - 1.3). Write a rule to describe this transformation. Then

adrian works in new york city and makes $42 per hour. she works in an office and must get her suit dry cleaned everyday for $75. if she wants to make more than

Which was not an achievement of W.E.B. Du Bois? first African American to earn a Harvard Ph.D. along with others, helped form the NAACP helped launch the Niagar

With which of these positions would President Calvin Coolidge have agreed? The key to economic growth is strict government control of business. Farmers and fact

I need help with my Biology homework, I've looked through my revision book and my class book as well as searching the internet but I cant seem to find anything.

what is a polygon that connects with the base of a polyhedron

What is half of 12? And explain how u got that answer.

Which of the following is an incorrect statement about coral reefs? A- Coral reefs are not beneficial to ocean ecosystems. B- Coral reefs provide homes as well

Which tactic used by Gandhi and Martin Luther King, Jr., was adopted by César Chávez? A. starting fires in hay and bean fields B. paying off the press to get th