x² = 11x - 10
x² - 11x = 11x - 10 - 11x
x² - 11x = - 10
x² - 11x + 10 = - 10 + 10
x² - 11x + 10 = 0
x² - x - 10x + 10
x (x - 1) - 10( x - 1)
(x - 10)(x - 1))
- - - - - - - - -s-
2007-04-11 06:37:20
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answer #1
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answered by SAMUEL D 7
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x^2=11x-10
x^2 - 11x + 10 = 0
now to factor this, get your "target numbers"; the first found by multiplying the number in front of the first and third term (1 times 10) and the second is the number in front of the second term (-11)
now find two numbers that multiply to be the first target and add to be the second:
__ x __ = 10
__ + __ = -11
-10 and -1 are the answers, so substitute -10x and -1x for the middle term:
x^2 - 10x - 1x + 10
now factor the left and right sides:
(x^2 - 10x) + (-1x + 10)
x(x - 10) + -1(x - 10)
now since the two numbers in the parenthesis are equal, you can multiply the numbers inside the parenthesis by the numbers outside the parenthesis:
(x - 10)(x - 1)
now remember this whole thing is equal to zero:
(x - 10)(x - 1) = 0
so when you have to numbers multiplied together to equal 0, one side has to be zero, so there will be two answers to this problem:
x - 10 = 0..............x - 1 = 0
x = 10...................x = 1
2007-04-11 06:44:10
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answer #2
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answered by Link 4
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simplify to one side: x^2 - 11x + 10 = 0
factor out: (x - 10)(x - 1) = 0
solve for x: x = 10 or x = 1
2007-04-11 06:32:57
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answer #3
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answered by Sam 2
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x^2-11x+10=0
(x-1)(x-10)=0
x=1 or x=10
2007-04-11 06:31:46
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answer #4
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answered by jrome 2
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x^2-11x+10=0
(x-1)(x-10)=0
x=1,x=10
2007-04-11 06:33:51
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answer #5
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answered by Dave aka Spider Monkey 7
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x^2-11x+10=y (x-10)(x-1) Zeros (10,1)Min or vertex(5.5,-20.25)
2007-04-11 06:37:15
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answer #6
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answered by dwinbaycity 5
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