2k^2-21k+49=0

Simple and best practice solution for 2k^2-21k+49=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

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

Solution for 2k^2-21k+49=0 equation:


Simplifying
2k2 + -21k + 49 = 0

Reorder the terms:
49 + -21k + 2k2 = 0

Solving
49 + -21k + 2k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(7 + -2k)(7 + -1k) = 0

Subproblem 1

Set the factor '(7 + -2k)' equal to zero and attempt to solve: Simplifying 7 + -2k = 0 Solving 7 + -2k = 0 Move all terms containing k to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2k = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2k = 0 + -7 -2k = 0 + -7 Combine like terms: 0 + -7 = -7 -2k = -7 Divide each side by '-2'. k = 3.5 Simplifying k = 3.5

Subproblem 2

Set the factor '(7 + -1k)' equal to zero and attempt to solve: Simplifying 7 + -1k = 0 Solving 7 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1k = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1k = 0 + -7 -1k = 0 + -7 Combine like terms: 0 + -7 = -7 -1k = -7 Divide each side by '-1'. k = 7 Simplifying k = 7

Solution

k = {3.5, 7}

See similar equations:

| 8/(x-1)^3 | | 16t^2+25t+3=0 | | 9x+5=9(x+8) | | X+19=13x-5 | | 14-x^2=11 | | 144=n-2/n(180) | | 3m-(7m-12)=2(m-3) | | 4x^2-3x+2-6x^2+4= | | 2p+4=-18-9p | | 2t^2-t=0 | | 2tanx=5 | | 4u^2+8=0 | | f(3)=3 | | logx=7.96 | | x-4=+6 | | -2(5t-5)+6t=3t-3 | | 7x^2=58 | | 3(-2)=15 | | (2x^2y/3x)(9xy^2/y^4) | | 0.14(y-4)+0.08y=0.16y-0.5 | | y=ln(0.5x) | | (5/7)-(1/3)=(x/9) | | x^4-4x^3+6x^2-4x+5=0 | | 3(c-2)=-3 | | x^4-4x^3+6x^2+5=0 | | 4x^3-8x^2-3x+9=0 | | y=-5x-40 | | 7x+8y=-19 | | 9z-z^/z-3 | | -8(-8x-6)=-6x-2/ | | -6x^3+2x^5= | | 6(2x+4)=132 |

Equations solver categories