Straight to the quadratic equation. -b +/- sqrt(b^2 - 4ac)/2a
16 = a
-24 = b
7 = c
24 +/- sqrt[ (-24)^2 - 4(16)(7)]/2(16)
24 +/-sqrt( 576-448)/32
24 +/- sqrt(128)/32 ( reduce fraction )
3 +/- sqrt(128)/4 ( let us see about that mess under the radical )( like this!)
3 +/- sqrt( 4^2 * 2^2 * 2)/4 (4 and 2 come out and make 8)
3 +/- 8sqrt(2)/4 ( you finish)
There are 2 unknowns
You need to express the problem a little more clearly. If you mean: (x + 2) / 2 + (x - 2) / 5 = 2 Then you can solve it like this: First, multiply both sides of the equation by 10 (the smallest number that is divisible by both two and five): 10(x + 2) / 2 + 10(x - 2) / 5 = 20 Then you can take care of the division on the left: 5(x + 2) + 2(x - 2) = 20 And then do the multiplication: 5x + 10 + 2x - 4 = 20 Group like terms: 7x + 6 = 20 Move the 6 across to the other side: 7x = 20 - 6 7x = 14 And finally, divide everything by 7: 7x / 7 = 14 / 7 x = 2
x3 -3x2 -x - 1 divided by x+2 equals x2-5x+9 remainder -19 It's difficult to show how to work it out on this computer but division with algebra has a lot in common with doing long division with integers.
I'll show work. X2-8x-4=0. X2-8x=4. X-8x=2. -7x=2. X=-(2/7).
y = 2 sin 3x y' = 2(sin 3x)'(3x)' y' = 2(cos 3x)(3) y' = 6 cos 3x
If you would to solve for (l) then l = 4x/2 + 3/2 (4x + 3 is over 2).To solve for x. x = 2l/4 + 3/4 ( 2l + 3 is over 4)Hope this helps.
That factors to 2(x + 4)(x + 6) x = -4, -6
To solve the equation you need to know at least a value for x or y. For example if x = 2 then the solution will show that y = 1.
you have to find the key with the plus and equals symbol. Then push the shift key and the plus/equals key. The "cross" should show up. Plus (+) equals (=). The plus should be above the equals.
Algebra4y-4 plus y plus 24 equals 6y plus 20-4YCombine like terms5y+20=2y+20Isolate Y3y=0y=0
There are 2 unknowns
x = 0 & y = -3
3x + 4y = 5x - 2y = 5leads to:x = 5 + 2ySo:3(5 + 2y) + 4y = 515 + 10y = 510y= -10y=-1and therefore if y = -1 then x = 3.
b/2=2ab/+b means112.5
3x-8=7x+10x 3x-8=17x -8 = 14x -4=7x -4/7
7a=2(-10)........................................answer is 20/7
To solve -5+2+(-3), start by adding -5 and 2 together which equals -3. Then, add -3 to -3 which gives you a final answer of -6.