When a product is equal to zero, each factor can be set individually equal to zero. This equation has two solutions: x + 6 = 0 ==> x = -6, and x - 3 = 0 ==> x = 3.
2006-10-11 00:50:26
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answer #1
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answered by DavidK93 7
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Hi there!
the concept behind this is to think of 2 numbers that when you multiply both of them, you'll derive 0.
it's either 0 x 0 = 0
or a x 0 = 0 a can be any number
or 0 x b = 0 b can be any number
so, from this,
(x+6)(x-3)=0 is an equation of a product
multiplying x+6 and x-3.
so to have a zero answer,
either x+6 = 0 ===> x=-6
or x-3= 0 ===> x=3
cheers
2006-10-11 10:08:13
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answer #2
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answered by 123456 1
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1)x = - 6
&
2)x = 3
2006-10-11 07:52:37
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answer #3
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answered by Anonymous
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since (x+6)(x+3)=0 We have
x+6=0 which implies x=-6
x+3=0 which implies x=-3
thus x=-6 or -3
2006-10-11 09:13:22
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answer #4
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answered by AJJAEC 2
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x is a valve that we do not know,right.the idea(solution) is to find the value of x.if we are multiplying two numbers and the answer is 0,indefinitely one of the number or both of the numbers are =to 0.
so in this case.either the (x+6) or(x-3) has to be 0.then we take one by one,if the x+6=0 x has to be -6
if the x-3=0 x has to be 3
so the answer is x might be -6 or 3
2006-10-11 07:59:29
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answer #5
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answered by aruna 1
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(x+6)(x-3)=0
x+6=0; x=-6
x-3=0; x=3
2006-10-14 22:02:18
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answer #6
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answered by yupchagee 7
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x=-6 and x=3
so the equasion will be right
and the first bracket when it will be multiplied in the second
the result should be 0
2006-10-11 07:53:09
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answer #7
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answered by Safe 2
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x+6=0
so x=-6
x-3=0
so x=3
so this question got 2 answer
x= -6 and x=3
hope that i am correct...
u better check with others answers
2006-10-11 07:54:11
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answer #8
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answered by edison yan 1
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(x+6)(x-3)=0
x.x +6x -3x -18=0
x.x +3x = 18
x=3
there is also a formula on the basis of a quadratic equation
but this problem is very simple.
2006-10-11 07:54:39
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answer #9
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answered by advent m 3
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FOIL Method
(x + 6)(x - 3) = x² + 6x - 3x - 18 = x² + 3x - 18
- - - - - - - - - - - - - - - - - - - - - - - - - - -s
x + 6 = x = - 6
x - 3 = x = 3
2006-10-11 09:56:30
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answer #10
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answered by SAMUEL D 7
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