If it's not what You are looking for type in the equation solver your own equation and let us solve it.

X2-280X+2400=0

We add all the numbers together, and all the variables

X^2-280X+2400=0

a = 1; b = -280; c = +2400;

Δ = b^{2}-4ac

Δ = -280^{2}-4·1·2400

Δ = 68800

The delta value is higher than zero, so the equation has two solutions

We use following formulas to calculate our solutions:$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{68800}=\sqrt{1600*43}=\sqrt{1600}*\sqrt{43}=40\sqrt{43}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-280)-40\sqrt{43}}{2*1}=\frac{280-40\sqrt{43}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-280)+40\sqrt{43}}{2*1}=\frac{280+40\sqrt{43}}{2} $

| 90+(2b-90)+1.5b+b+45+b=540 | | 43-17=2x17-5 | | 2x-12=9+x-10 | | 4/5=10/16*x | | 7(x+3)=7•x+21 | | 7x+3+x+17=180 | | 5-6x-6=13+2(3x-1) | | 5=1/3•v-3 | | 14.2+0.07x=14.49+0.11x | | X2-140x+2400=0 | | 17.1+2.1k=3.9k | | b/17-4b/17=24/17 | | X-8r=3.14 | | 4h+16=0 | | 3x+5/3=10 | | 22/3x+1/12=1/2 | | 11/8v=113/64 | | 3.9k=2.1+17.1 | | (x-3)²=16 | | 5n+3=2n+19 | | 2j+8=2 | | 22/3x+1/12=1-2 | | 1=0.3x-0.9-17 | | 10-1x=1-9x | | 4/5=10/16/x | | (6x-8)(3x+2)=0 | | 14-(x+5)=3(x+9)-1 | | 2x+19=14x | | 15-3e+2=10 | | -w+207=66 | | (4/5)=(10/16)/x | | 2x*6=21 | | 2d+10=6d-1 | | -10-8v=7(-2v-5)+7 | | 05d-3d+5=0 | | 2x-8+2x-8=39 | | x=412+x | | 12.23+0.11x=12.73-0.14x | | 3/4(2x+4)=1/2(5x-10) | | 181-v=265 | | -6=(2/9)x | | -(3/4)x-(5/2)=-(5/8)+2x | | (1-x)=2 | | (7x+2)^2=16 | | 42/3+c=48/9 | | 18=5s+2s | | 94=275-w | | -5y-10=-6 | | (8x-3)(7x+8)=0 | | 1+2t=-9 | | 9(t?2)=4(t?15) | | 21=-v+171 | | |b+3|=|2b-2| | | 3.5x+0.5x=7.5+2.5x | | 9(2n-3)=-25 | | 140=x-28+x | | 3(x-2)=-5x-2(3-x) | | (-6)=(2/9)x | | g+2g=96 | | (x+6)^(4/3)=81 | | 5m+2=2(m+7) | | 15x2-44x+21=0 | | 113-x=259 | | -49/x-36=-29 | | 11-2(d-1)=2d |

- Equations solver - equations involving one unknown
- Quadratic equations solver
- Percentage Calculator - Step by step
- Derivative calculator - step by step
- Graphs of functions
- Factorization
- Greatest Common Factor
- Least Common Multiple
- System of equations - step by step solver
- Fractions calculator - step by step
- Theory in mathematics
- Roman numerals conversion
- Tip calculator
- Numbers as decimals, fractions, percentages
- More or less than - questions

x sinx graph 3sqr 4000 rupees to pounds what is 15 of 16 bodmas solver gcf calculator algebra sin2x sin3x sin45 cos45 4pir write each percent as a decimal calculator 100-79 3 6x 11-4y 2y x 3 greatest common factor of 65 what is the lcm of 9 4x 2y 7 315.31 numbers that multiply to 168 101010 in decimal factors of72 derivative calculator steps 90-15 common multiples of 12 solve 2sin 2x 1 tiger algebra com 75 percent off calculator 7x28 1966 roman numerals cosx cos 2x two step equations calculator with fractions finding the least common denominator calculator 1600-1900 derivative of ln3x cos 8x common multiples of 7 lcm calulator simplify 3x 2 log5x 2 70-68 derivative of x a what is the gcf of 81 and 36 simultaneous equations calculator with steps 32 qt gal 4x 3y 12 2x 2 3 factored hctib derivative of cos3x solve for i 9x-7i 3 3x-7u what is 1 of 25 20000 naira to pounds what is the prime factorization of 41 prime factorization of 88 using exponents cosx cos2x cos3x 724.5 cos2x sin3x 61 in roman numerals graph 3x 4y 12 is228 derivative tanx 2 7x 4y x 7y 0 graph 2x y 2 simplify square root 180 derive calculator solve sinx cosx derivative of cos 6x ln x differentiation derivative of sin 3x prime factorization of 164 15000 rupees in dollars what is 0.625 as a fraction what is 0.1111 as a fraction step by step math problem solver xx 4x factorization of 245 ln secx derivative of 2x 2 derivative sin2x 2cosxsinx sin2x cosx square root 576 800-723