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Mathematics 15 Online
OpenStudy (anonymous):

please HELPPP Solve the following system of equations and show all work. y = x2 + 3 y = x + 5

OpenStudy (michaelac959):

is there anything added on to the problems?

OpenStudy (anonymous):

No, Just the equations above. I believe i'm suppose to use elimination but i'm a bit confused sense there is a exponent

OpenStudy (johnweldon1993):

Hint* You see that in both equations... y = something right? Well if we know y = both of those things...then logically, both those things are equal right? i.e \[\large y = y\] so \[\large x^2 + 3 = x + 5\] Now can you solve it?

OpenStudy (anonymous):

x=-1 and x=2

OpenStudy (johnweldon1993):

Perfect...so now that we know the 'x' answers, we can find out the 'y' answers *as there are clearly 2 sets of answers* So when x = -1...what does either equation come out to?

OpenStudy (johnweldon1993):

And then when x = 2, what does either equation come out to?

OpenStudy (anonymous):

alright so you have 4 and 7

OpenStudy (anonymous):

@johnweldon1993

OpenStudy (anonymous):

(-1,4)(2,7)

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