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anonymous
 one year ago
Find the equation of the quadratic function with zeros 10 and 12 and vertex at (11, 2).
y = 2x2  44x + 120
y = 2x2  44x  240
y = 2x2  44x + 240
y = 2x2  44x + 240
im thinking its either the last one or second the the last one.
anonymous
 one year ago
Find the equation of the quadratic function with zeros 10 and 12 and vertex at (11, 2). y = 2x2  44x + 120 y = 2x2  44x  240 y = 2x2  44x + 240 y = 2x2  44x + 240 im thinking its either the last one or second the the last one.

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.2vertex form is a(x  h)^2 + k where (h,k) are the coordinates the the vertex

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2and a is a number to be found

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2so here h = 11 and k = 2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2y = a(x  11)^2  2 plug in one of the zeroes say y = 0 and x = 10 and solve for a

anonymous
 one year ago
Best ResponseYou've already chosen the best response.00=a(1011)^22 0=1a a=0

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2your secon ine is wrong

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2(1011)^2 = 1^2 = 1

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2so now you need to expand y = 2(x  11)^2  2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and that is done by..? sorry...i rly dont get this stuff..

welshfella
 one year ago
Best ResponseYou've already chosen the best response.22(x  11)^2  2 = 2[x^2 22x + 121]  2 can you continues

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2multiply each term in the parentheses by 2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2no you just multiply 2x^2  22x + 121 by 2 then take 2 away

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what? im sorry im confused

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2 ive worked out (x  11)(x  11) already

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2(x  11)(x  110 = x^2  22x + 121

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay.. so i multiply the whole thing by 2?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2yes then take 2 away ( the 2 at the end)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.04x^244x+242. now subract 2 from each number?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2no  just from the 242 you can only subtract like terms

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2oh its 2*x2 = 2x^2 not 4x^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay i was gonna say. lol everything else matches but the 4x lol

welshfella
 one year ago
Best ResponseYou've already chosen the best response.22x^2  44x + 242  2 = 2x^2  44x + 240

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0got it! so i was close, i had a feeling it be that one or the last one.
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