IS √x-2 conjucted in x=2?
406823
conjucted?  what is that??
557831
Yes. You are right, but if and only if the equation MUST be valid for all a & b. The reason is:\n(x+a+b)^2 - x^2 = (x+a+b - x)*(x+a+b + x) = (a+b)*(2x+a+b)\nand\n(x+a)^2 - (x+b)^2 =[x+a -(x+b)]*[x+a + (x+b)]= (a-b)*(2x+a+b)\ncomparing the above, and noting that a+b could not be equal to a-b for all a & b, then 2x+a+b=0 so x=-(a+b)/2\nSimilarly the second equation could be solved by giving square root of both sides:\nx+a = +/-(x+b)\nit is obvious that "+" sign could not be selected since it required that a=b which is against our assumption. So:\nx+a=-(x+b) ==> x=-(a+b)/2
441224
x - sqrt(x) = 0\nAdd sqrt(x) to each side\nx = sqrt(x)\nSquare each side\nx^2 = x \nSubtract x from each side\nx^2 - x = 0\nFactor x\nx(x-1) = 0\nx = 0 or x = 1\nCheck in orginal problem: x- sqrt(x) = 0\nFor x = 0\n0 - sqrt(0) = 0\n0 - 0 = 0 \n0 = 0\nFor x = 1\n1 - sqrt(1) = 0\n1 - 1 = 0\n0 = 0\nThus, the answers are \n0 and 1\n\nAlso, sqrt(x^2) = x is only tru if x is positive.\nsqrt(x^2) = |x| is true for any number.\nThat is, the square root of x^2 is equal to the absolute value of x.\n\nx^2 = 4 means x = -2 or x = 2
271749
Yes.\n\n1.Let A = B\n\n2.Thus, by definition, A2 = AB (A2 = A squared)\n\n3.Add A2 to each side:\n\n2A2 = A2 + AB\n\n4.Subtract 2AB from each side:\n\n2A2 - 2AB = A2 + AB - 2AB, which in turn is the same as:\n\n2A2 - 2AB = A2 - AB\n\n5.Factor (A2 - AB) out of each side:\n\n2 (A2 - AB) = 1 (A2 - AB)\n\n6.Divide each side by (A2 - AB):\n\n2 (A2 - AB)    =    1 (A2 - AB)\n             _________        _________\n   (A2 - AB)    (A2 - AB)\n\n7.The result:\n\n2 = 1\n\nPS:  Obviously there is a clear logical error embedded in this. :)
803771
sq.rt of x*y = Sq.rt X * sq.rt. Y\n\nIt can be proven that:\n √(x*y) = √x * √y\n\nConsider the first part → √(x*y).\nTwo number values, one is x and the other is y, they are multiplied together.  You then take the square root of this result.\n\nConsider the second part → √x * √y.\nYou take the square root of x and y and then you multiply the results together.\nIt can be shown that the results of the first part is the same as the result of the second part.
896553
4x^2+8x-x-2\n(4x-1)(x+2)
801012
inverse square root of a number say"x" is\nx^[-(1/2)]
692175
( x^2 -x +2 )( x^2 + x + 2 )\n\n=>\n a= -1\n b= +2\n c= +1\n d= +2
599364
x^2 + x = x(x+1)\n\nIt can be simplified to x(x+1).
737079
If the x2 mean x squared?\n\n4x^2 + 3x + 6
756908
√x^2=√13\nx=±3.605551275\n\nCheck:\n±3.605551275^2=13\n13=13
311407
are you trying to solve for x?\n\nFirst, find the factors for the equation.  (x+2)(x+1)\n\nCheck it to see if it's right.  x times x equals x squared. 1x plus 2x equals 3x. 2 times 1 equals 2.\n\nMake one of the parenthesis groups equal to zero.  For example, x+2 = 0   To solve this, x must equal -2.\n\nPut -2 back into the original equation and see if it works.\nNow make the parenthesis group equal to zero.  x+1=0  To solve this, x must equal -1.\n\nTherefore, the answer is using either -1 or -2 will make the equation zero.\n\nHope this helps.  ;)
390971
Yes, 14x if x=2, which means 14 x 2 = 28, the answer would be 28. It is a simple form of variables/equations. If you need help on any others, feel free to ask.
302992
2 x 2 = 4\nHe asked for square, not square root.
868180
the roots are (2a-1)x(2a-1)
412542
x = -b +(or)- sqrt(b^2 - 4ac)\n    -------------------------\n               2a
1138309
I hope you are trying to say x+2 = (2/3)(2x-1)..if it is correct then\n\n3(x+2) = 2(2x-1) --> 3x+6 = 4x - 2 --> 6+2 = 4x-3x --> 8 = x