40=20t+t^2

Simple and best practice solution for 40=20t+t^2 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 40=20t+t^2 equation:


Simplifying
40 = 20t + t2

Solving
40 = 20t + t2

Solving for variable 't'.

Reorder the terms:
40 + -20t + -1t2 = 20t + -20t + t2 + -1t2

Combine like terms: 20t + -20t = 0
40 + -20t + -1t2 = 0 + t2 + -1t2
40 + -20t + -1t2 = t2 + -1t2

Combine like terms: t2 + -1t2 = 0
40 + -20t + -1t2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-40 + 20t + t2 = 0

Move the constant term to the right:

Add '40' to each side of the equation.
-40 + 20t + 40 + t2 = 0 + 40

Reorder the terms:
-40 + 40 + 20t + t2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 20t + t2 = 0 + 40
20t + t2 = 0 + 40

Combine like terms: 0 + 40 = 40
20t + t2 = 40

The t term is 20t.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20t + 100 + t2 = 40 + 100

Reorder the terms:
100 + 20t + t2 = 40 + 100

Combine like terms: 40 + 100 = 140
100 + 20t + t2 = 140

Factor a perfect square on the left side:
(t + 10)(t + 10) = 140

Calculate the square root of the right side: 11.832159566

Break this problem into two subproblems by setting 
(t + 10) equal to 11.832159566 and -11.832159566.

Subproblem 1

t + 10 = 11.832159566 Simplifying t + 10 = 11.832159566 Reorder the terms: 10 + t = 11.832159566 Solving 10 + t = 11.832159566 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + t = 11.832159566 + -10 Combine like terms: 10 + -10 = 0 0 + t = 11.832159566 + -10 t = 11.832159566 + -10 Combine like terms: 11.832159566 + -10 = 1.832159566 t = 1.832159566 Simplifying t = 1.832159566

Subproblem 2

t + 10 = -11.832159566 Simplifying t + 10 = -11.832159566 Reorder the terms: 10 + t = -11.832159566 Solving 10 + t = -11.832159566 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + t = -11.832159566 + -10 Combine like terms: 10 + -10 = 0 0 + t = -11.832159566 + -10 t = -11.832159566 + -10 Combine like terms: -11.832159566 + -10 = -21.832159566 t = -21.832159566 Simplifying t = -21.832159566

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.832159566, -21.832159566}

See similar equations:

| 0=-70+40t+5t^2 | | 0=-70 | | 5x^1/5*6x^1/3 | | 6x-12=33+3x-12 | | -3(3y-8)-y=-4(y-4) | | 37x+5=6(6x+3) | | 2x-7x+6=x-5+11 | | y=-16x^2+35x+20 | | 9n-26=-18+5n | | m-2.4=5.3 | | f(x)=x^3-4x^2+4x-16 | | 0.132/0.22 | | -12x^2+11x-3=0 | | 11-4=7+14h | | 394.98/0.026 | | 8x-24=18+x | | 347.94/8 | | 70=40t+5t^2 | | 4h=45min | | 32cm=4m | | 3/5x+4/2x+12=15/3x+7/5x+12 | | 62+9x=63+8x | | y=4x+27 | | 7(n-6)=7 | | 7n-6=7 | | 92+9x=100+7x | | 25x-2=75x-202 | | 60=4x-12-2x | | 78+8x=80+7x | | 4x-2y=8x | | 47=3x+8 | | 2/6130 |

Equations solver categories