X = under root 6x +7 - ( 2x- 7) = 0
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6x+7-(2x-7) = 0
6x+7-2x+7 = 0
4x+14 = 0
4x= 0-14
4x= - 14
X= - 14/4
x= - 3.5
tanisha38:
6x+7 m underroot bhi h
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Given root 6x + 7 - (2x - 7) = 0 can be written as
root 6x + 7 = 2x - 7
On squaring both sides, we get
(root 6x + 7)^2 = (2x - 7)^2
6x + 7 = 4x^2 - 28x +49
6x + 7 - 4x^2 + 28x - 49 = 0
34x - 42 - 4x^2 = 0
It is in the form of ax^2 + bx + c = 0
On solving using the formula -b+/ root b^2 - 4ac/4a
We get 3/2,7
3/2 doesn't satisfy the equation.
Hence the answer will be x = 7.
root 6x + 7 = 2x - 7
On squaring both sides, we get
(root 6x + 7)^2 = (2x - 7)^2
6x + 7 = 4x^2 - 28x +49
6x + 7 - 4x^2 + 28x - 49 = 0
34x - 42 - 4x^2 = 0
It is in the form of ax^2 + bx + c = 0
On solving using the formula -b+/ root b^2 - 4ac/4a
We get 3/2,7
3/2 doesn't satisfy the equation.
Hence the answer will be x = 7.
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