15 - 2ab for a = 0 and b = 2  evalutate the expression?
410703
15 - 2(0)(2)\n15 - 0\n=15\nnow do ur own homework!!!!!!!!!!
889891
~..-8,-6,-4,-2,0,2,4,6,8
863644
take out 4x first\n4x(x2-6x+8)\n4x(x-4)(x-2)
1057987
13+(-12)-(-15)=-16 because you subract 13 from 12 and get one.  Then you are left with 1-(-15).  When you have two negatives they become a positive.  Then the problem becomes 1+15=16\n\nHOPE THAT HELPS!
22859
Subract the two terms on the left giving:\n-2t < 16\n\nAdd 2t to both sides giving\n0 < 16 + 2t\n\nSubtract 16 from both sides\n\n-16 < 2t\n\nDivide both sides by 2\n\n-8 < t
1043865
I'm not sure why you have spaces between the number and the variables.\n2 = 2x + 1x + 2x + 10\n2 = 5x + 10\n-8 = 5x\nx = -8/5
164692
Yes, it goes like this:\n\n\nStatr out with any two numbers.....a & b.\n\nThen set them equal to each other:\n\na = b\n\nThen proceed as follows.\n\na = b\n\n==> a^2 = ab\n==> a^2 - b^2 = ab - b^2\n==>(a + b)(a - b) = b(a - b)\n==> a + b = b\n\nNow....on the left hand side, since a = b as was staed in the beginning you say:\n\n(b) + b = b\n==> 2b = b\n==> 2 = 1\n\n<done>\n\nVery slick, and very cool...and very wrong.....lol.\n\nThe 'error' comes in when you divide by a - b. Since a = b, you are essentially dividing by zero, and that is a mathematical no-no.\n\nHiope that clears things up for you.
909597
C/C++ solution\n\n#define MINIMUM2(a,b) ((a)< (b) ? (a) : (b))\n\nint x = MINIMUM2(3,5); // using it\n\nparentheses added in macro in case a or b is an expression and in case the macro itself is in another expression
857932
This formula will put a minus sign in a second column's entry when the first column's entry is a minus or the positive value if positive.\nA1=first entry\nA2=second entry\nPut into A2:\n=IF(A1>0,A1,"-")
416203
You divide by 0 when you divide by a-b
814891
a^2 - 2ab + b^2 = (a - b) ^2\n\nthen...\n\n(a - b)^2 / (a + b) = (a -b) (a - b) / (a + b)
4935
ur second equation is wrong. \n2a is not equal to a-squared (which u symbolized by ab, since a=b).
681111
let me solve ur example first, then i will explain it to u.\n-5-(-15)\n-5+15\n10 is the answer. \n\nIf there r two negative together, make it positive.\nUse the following formula:\n- -= +\n- += -\n+ += +\n+ -= -
429058
x==(-b+/-sqrt(b^2-4ac))/(2a).
613986
=IF(E12=0,0,\nIF(AND(E12>0,E12<4),\n5.9,IF(E12>=4,12.9,\n"negative value")))\n\nAll on one line!\n\nEdit:  The >= (greater than or equal to) is required else the value of exactly 4 would return "negative value"
470569
The formula would be: =IF(A2="A", 10)\n\nThis would be pasted into another cell, like B2 for example.  Thus, if A2 is A, then B2 would display a 10 - if it is not, it will display FALSE.\n\nIf you don't want FALSE to appear, change the formula to: =IF(A2="A", 10, 0)  You can substitute the value of 0 for whatever you want the cell B2 to display if A2 is not A.
940135
Use factoring.\nx2-2x-8=0\n(x-4)(x+2)=0\nso\nx-4=0 and x+2=0\nsolve\nx=4 and x=-2