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anonymous
 3 years ago
can someone tell me how to do this? i forgot :x
anonymous
 3 years ago
can someone tell me how to do this? i forgot :x

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yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1what does x intercept mean? y is 0? or x is 0? refer to the cartesian plane.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1dw:1362416956027:dw this is called the cartesian plane. x intercept means what length does the curve cut from the origin.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1origin is the intersection of x and y axis

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1as i said, x intercept is the length the curve cuts on the x axis. so we have to find where the curve cuts the axis. what would put equal to 0? y no? correction: not from the origin in case of any curve. only in case of a staright line.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1yup. you would get two points. the distance between those points will give you the length of intercept.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.13x^2 + 19x – 40=0 solve.. take your time.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1i deleted that. do it yourself. you'll learn better.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1suppose the general equation is ax^2 +b x + c when you have to solve this equation you always have to find those two numbers whose product is a*c and sum is b. likewise, if you have ax^2 +b x  c , sum of the numbers has to be b and product has to be a*c. here, you have to find two number whose product is 120 and sum is 19.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1can you now find those 2 numbes?

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1no no. those number arent the roots. you have to do this way. 3x^2+19x40=0 >3x^2 +24x 5x 40=0 >3x(x+8)  5(x+8)=0 taking x+8 common (3x5)(x+8)=0 x=5/3,8 we still dont have the intercept. first tell me if you got this.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1basically we have to resolve 19 into 2 numbers which have the product 120 and sum 19. it makes our job to find x easier.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1yes. it can be confusing. take your time. i'll recommend watching some vids on how to find roots. they can be really helpful.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1nope. x intercept is the length the curve cuts on the x axis. so basically the points you have are where the curve cuts the x axis right? dw:1362419151119:dw so what you would have to is. calculate the distance between 5/3 and 0(origin) and 0(origin) and 8. these would be 5/3 and 8 respectively. add them and you have your answer.

yrelhan4
 3 years ago
Best ResponseYou've already chosen the best response.1oh dang. yeah it means the points. i was confusing it with something else. :o
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