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anonymous
 one year ago
how would you find the x and y intercepts of y=x^2+x2?
anonymous
 one year ago
how would you find the x and y intercepts of y=x^2+x2?

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johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.1Well the easiest way would to be by graphing the function, but if we cant do that we can always algebraically figure it out

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how would you solve graphically? I know the first step is to make either x or y equal 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0** I mean algebraically

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.1Well you are correct that is how we do it To solve for the 'y intercept' we make x = 0 \(\large y = 0^2 + 0  2 \) meaning that \(\large y = ?\)

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.1Right And now the xintercept would be making y = 0 So \[\large 0 = x^2 + x  2\] We can factor this or just brute force through it

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2to find the yintercept we let x = 0 to find the xintercept we let y = 0 so when x = 0, y = 2 so that would mean that our yintercept is at (0,2)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2we can factor \[\large 0 = x^2 + x  2 \]. and then solve for x. We would have more than one solution for our xintercepts

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2so we need to focus on the last term 2 and the second term 1 there's only one combination 2 x 1 = 2 (so we got the last term) we need to use subtraction to obtain one 21 =1 so we have \[\large 0 = (x+2)(x1)\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2now we just split this up and solve for x in each case \[\large 0 = x1\],\[\large 0 = x+2 \]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2yes our x = 2 and x = 1 so our xintercepts are (2,0) and (1,0) because we need y = 0 to obtain the xintercepts.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0first put y=0 so your equation will be0=x^2+x−2 then you will make it (x1)(x+2)=0 so it will lead that x is equal to 1 and 2
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