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anonymous
 one year ago
What are the zeroes of f(x) = x2  6x + 8? (4 points)
x = 4, 2
x = 4, 2
x = 4, 2
x = 4, 2
anonymous
 one year ago
What are the zeroes of f(x) = x2  6x + 8? (4 points) x = 4, 2 x = 4, 2 x = 4, 2 x = 4, 2

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sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0Hello! sorry for the kinda slow reply .. do you know how to factor? aka backwards FOILing?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes i know how to foil first outers inners last

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0that's good :) but now we have to do it backwards for example x^2  8x + 12 = (x)(x)  (6x)  (2x) + (6)(2) = (x  6)(x  2)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you walk me through it please?

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0of course :) first we have to understand that in our equation: \( x^26x+8 \) we have to find two numbers (x + #)(x + #) that will go here ^ ^ these two numbers should \(multiply~up~to~positive~8\) and \(add~up~to~negative~6\)

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0so let's first list the pairs of numbers that can multiply up to a positive 8 :)

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0this would include \( 1~and~8 \) \( 1~and~8\) etc can you find a pair that adds up to \(6\) ? [adds up like \(1 + 8 = 9\) ]

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.01 and 8 1 and 8 2 and 4 2 and 4 1+8=9 1 + 8 = 9 2+4= 6 2 + 4 = 6 < so the pair of 2 and 4 works

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0all we have to do now is to plug "2" and "4" into (x + __)(x + __) ^ ^ to have our factored version of the equation

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0\(Warning!\) Don't select an answer yet!

sleepyhead314
 one year ago
Best ResponseYou've already chosen the best response.0(x  2)(x  4) now the "zeros" of this would be when each part is set equal to "zero" x  2 = 0 [solve for x] x  4 = 0 [solve for x] noww you will get your answers :)
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