(1) x^3 = 6x - x^2
(2) 14x = x^3 + 5x^2
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EbrahimHashem
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What is the value of x ?
(1) x^3 = 6x - x^2
(2) 14x = x^3 + 5x^2
HAVE FUN!
(1) x^3 = 6x - x^2
(2) 14x = x^3 + 5x^2
HAVE FUN!
(1) gives us x=0,-3,2EbrahimHashem wrote:What is the value of x ?
(1) x^3 = 6x - x^2
(2) 14x = x^3 + 5x^2
HAVE FUN!
(2) gives us x=0,2,7
from (1) and (2) we get x=0,2
since the question asks what *is* (singular) the value of x, the answer must be (E), since from neither (1) or (2) can we get one single value for x.
(E)
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EbrahimHashem
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Your answer is correct! but what's wrong with the first answer provided by"kyabe"? is there anything we both are missing?qwe12 wrote:(1) gives us x=0,-3,2EbrahimHashem wrote:What is the value of x ?
(1) x^3 = 6x - x^2
(2) 14x = x^3 + 5x^2
HAVE FUN!
(2) gives us x=0,2,7
from (1) and (2) we get x=0,2
since the question asks what *is* (singular) the value of x, the answer must be (E), since from neither (1) or (2) can we get one single value for x.
(E)
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kyabe
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Ebrahim the answer posted by qwe12 should be correct as when I used deduced the solution I cancelled x from LHS and RHS. Now when we cancel X, 0 can be one of the factors. And as said by qwe12 after combining i and ii we are left with two values of x ie 0 and 2. Hence its E. Does that makes sense?EbrahimHashem wrote:Your answer is correct! but what's wrong with the first answer provided by"kyabe"? is there anything we both are missing?qwe12 wrote:(1) gives us x=0,-3,2EbrahimHashem wrote:What is the value of x ?
(1) x^3 = 6x - x^2
(2) 14x = x^3 + 5x^2
HAVE FUN!
(2) gives us x=0,2,7
from (1) and (2) we get x=0,2
since the question asks what *is* (singular) the value of x, the answer must be (E), since from neither (1) or (2) can we get one single value for x.
(E)
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EbrahimHashem
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kyabe
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From i) The factors are 0,2,-3
From ii) The factors are 0,2,-7
Combining these we get two factors of X ie 0 and 2.
Since we can't say that only one value of x will satisfy both the equations as there are two values 0 and 2. The answer is E
From ii) The factors are 0,2,-7
Combining these we get two factors of X ie 0 and 2.
Since we can't say that only one value of x will satisfy both the equations as there are two values 0 and 2. The answer is E
