mirandatamayo11 mirandatamayo11
  • 13-02-2019
  • Mathematics
contestada

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

Respuesta :

5naka
5naka 5naka
  • 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 what ways is climate controlled by the sun and the water cycle ?
What is Sir Francis Drake hardships
Can u paraphrase the quote ”let things take their course”
What three islands are located off the East African coast
Was the Gold Rush a good or bad thing for the United States?
What is Sir Francis Drake hardships
What are two different ways to describe and label the layers of the Earth?
What is the numerator or denominator of 4/5
A child is standing across the street from his apartment . His mother is on their balcony . The angle of elevation between the child's eyes and his mothers eyes
Trying to translate word problems. Five times the sum of 3 and twice some number is 70. what is the number?