Question

(5-x)(3+x)=2
Find a, b and c

Answer 1

What a b c?

Answer 2

quadratic equation

Answer 3

15+2x-x^2
a-x^2
b-2x
c-15

Answer 4

Just foil it out

Answer 5

formula?

Answer 6

@DylanH you forgot the 2

Answer 7

what 2?

Answer 8

\[\huge{(5-x)(3+x)=2}\]
\[\huge{5(3)+5x-3x+x^2=2}\]
\[\huge{15+2x+x^2=2}\]
The general form of a quadratic equation is \(\large{ax^2+bx+c=0}\)

compare both equations : can u do this now ?

Answer 9

Note u can also write \(\huge{15+2x+x^2=2}\) as :
\[\huge{x^2+2x+15=2}\]

Answer 10

ohhh my bad

Answer 11

ok tnx

Answer 12

what is c pls. i knew a=1 b= 2 c=?

Answer 13

@mathslover PLS ANSWER

Answer 14

13..

Answer 15

a : 1 , b: 2 and c : 15

Answer 16

isnt it 13? cause you will transpose 2 to the left side 15-2 =13

Answer 17

oh yes sorry u r right

Answer 18

@mathslover pls answer may last question (2/x)^2-4=7 find a b and c again pls

Answer 19

\[\huge{\frac{4}{x^2}-4=7}\]
\[\huge{\frac{4}{x^2}-11=0}\]
\[\huge{\frac{4-11x^2}{x^2}=0}\]
\[\huge{4-11x^2=0}\]
\[\huge{11x^2-4+0=0}\]
a = 11 , b = -4 , c =0 :)

Answer 20

thanks

Answer 21

if the hat cost 9.53 and the sale taxes was7% how much did rosa pay for the hat ?

Answer 22

$10.20

Answer 23

@lanceglojames first of all welcome to openstudy
I request you to post the questions as there in the bar of You have an open question : ask ... dont post in the other student's question .thanks!

Answer 24

25 childern will attend the birthday party . if each child gets 15 party favors and there are 75 favors in each box . how many boxs should raymond buy ?