darshkukreja
darshkukreja
20-11-2018
Mathematics
contestada
(x+4)^2-(x-5)^2=9
Plz solve this for me
Respuesta :
weirkai27
weirkai27
20-11-2018
X = 1
Simple answer. Hope this helps.
Answer Link
ivana2103
ivana2103
20-11-2018
(a+b)^2 = a^2 + 2ab + b^2
(a-b)^2 = a^2 - 2ab + b^2
(x+4)^2 - (x-5)^2 = 9
x^2 + 8x + 16 - (x^2 - 10x + 25) = 9
x^2 +8x + 16 - x^2 + 10x - 25 = 9
(the squared terms cancel out)
8x + 16 + 10x - 25 = 9
18x = 9 - 16 + 25
18x = 9 + 9
18x = 18
x = 1
Answer Link
VER TODAS LAS RESPUESTAS ( 82+ )
ACCESS MORE
ACCESS MORE
ACCESS MORE
ACCESS MORE
Otras preguntas
PLEASE ANSWER ASAP 20 POINTS + BEST GETS CHOSEN AS BRAINLIEST Find f(x+h)-f(x)/h for f(x) = x + 4.
why is dreams so important in mice and men
the vocabulary not understand this
when did the aryans arrive in the indus river valley?
Grace makes $2,200 per month. She spends $300 on credit card payments, $120 per month for a furniture purchase, and $450 on an auto loan. Does she have excessiv
The leaves were a-flutterin' like the ruffled feathers of a bird. What is this an example of? A. figurative language B. formal language C. literal languag
Which correctly names a point, line, or plane in the figure?
594 miles in 9 hours
Discuss what schools, parents, and young people/ learners can do to prevent alcohol and drug abuse amongst youth?
evan plans to put half of the money in his savings account spend 1/5 on bubble to share with his friends and buy comic books with the money he has left what por
