mirandatamayo11 mirandatamayo11

13-02-2019
Mathematics

contestada

Solving polynomial equations by factoring
Solve: (a+1) (a-5)=7
Full explanation please, thanks

Respuesta :

13-02-2019

(a+1)(a-5) = 7

expand

a² - 4a - 5 = 7

subtract by 7

a² - 4a - 12 = 0

factoring

(a+2)(a-6) = 0

a=-2 or a=6

Answer Link

Otras preguntas

In a simple food chain with 10-percent efficiency, a net primary production rate at the first trophic level is 10,000 units. How many units are available to the

what is the answer x^2+28=0

A and B are independent events. P(A) = 0.26 P(B) = 0.40 What is P(A and B)?

How does a writer show indirect characterization?

An aluminum ion has a charge of +3, and an oxide has a charge of -2. What would be the product of a reaction between these two elements

According to the eNotes, when a potential customer sees the line, but never joins the line because they think it looks too long and/or too slow, this is an exam

Find the equation of the line that is perpendicular to LaTeX: y=-\frac{1}{5}x+3y = − 1 5 x + 3 and goes through the point (4, -3). Put your answer in slope inte

A medical facility does MRIs for sports injuries. Occasionally a test yields inconclusive results and must be repeated. Using the following sample data and n =

___________ is the degree to which both businesses and customers believe that the pricing is reasonable. a. customer-led pricing b. fair pricing c. loss-leader

According to the graph, what is the value of f(1)-g(1)?. Please respond with a numerical value