(-5t^2)+4.9t+45=0

Simple and best practice solution for (-5t^2)+4.9t+45=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 (-5t^2)+4.9t+45=0 equation:


Simplifying
(-5t2) + 4.9t + 45 = 0

Reorder the terms:
45 + 4.9t + (-5t2) = 0

Solving
45 + 4.9t + (-5t2) = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-9 + -0.98t + t2 = 0

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -0.98t + 9 + t2 = 0 + 9

Reorder the terms:
-9 + 9 + -0.98t + t2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -0.98t + t2 = 0 + 9
-0.98t + t2 = 0 + 9

Combine like terms: 0 + 9 = 9
-0.98t + t2 = 9

The t term is -0.98t.  Take half its coefficient (-0.49).
Square it (0.2401) and add it to both sides.

Add '0.2401' to each side of the equation.
-0.98t + 0.2401 + t2 = 9 + 0.2401

Reorder the terms:
0.2401 + -0.98t + t2 = 9 + 0.2401

Combine like terms: 9 + 0.2401 = 9.2401
0.2401 + -0.98t + t2 = 9.2401

Factor a perfect square on the left side:
((t) + -0.49)((t) + -0.49) = 9.2401

Calculate the square root of the right side: 3.039753279

Break this problem into two subproblems by setting 
((t) + -0.49) equal to 3.039753279 and -3.039753279.

Subproblem 1

(t) + -0.49 = 3.039753279 Simplifying (t) + -0.49 = 3.039753279 t + -0.49 = 3.039753279 Reorder the terms: -0.49 + t = 3.039753279 Solving -0.49 + t = 3.039753279 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.49' to each side of the equation. -0.49 + 0.49 + t = 3.039753279 + 0.49 Combine like terms: -0.49 + 0.49 = 0.00 0.00 + t = 3.039753279 + 0.49 t = 3.039753279 + 0.49 Combine like terms: 3.039753279 + 0.49 = 3.529753279 t = 3.529753279 Simplifying t = 3.529753279

Subproblem 2

(t) + -0.49 = -3.039753279 Simplifying (t) + -0.49 = -3.039753279 t + -0.49 = -3.039753279 Reorder the terms: -0.49 + t = -3.039753279 Solving -0.49 + t = -3.039753279 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.49' to each side of the equation. -0.49 + 0.49 + t = -3.039753279 + 0.49 Combine like terms: -0.49 + 0.49 = 0.00 0.00 + t = -3.039753279 + 0.49 t = -3.039753279 + 0.49 Combine like terms: -3.039753279 + 0.49 = -2.549753279 t = -2.549753279 Simplifying t = -2.549753279

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.529753279, -2.549753279}

See similar equations:

| 15y+5=60 | | 101+85+2x+x=360 | | 3ax+4a-9x+15a= | | 8x+18+63=180 | | ln(12x^4)-ln(4x^2)=2 | | -2+x=3x+6 | | 2x^2-70=4x | | 3x+2+56=180 | | 2X-16=2X | | 6(u+4)=4u+32 | | x+3x-7+95=180 | | 4+2h-6-9h= | | (2x+10)(2X+15)= | | -4+4(4-3r)=-84 | | 2y+2=3z+5 | | -2x+40=-7(x-5) | | 11=3z+9 | | -1(x+2)+2x=5(2x-5)-x | | -a+4=17 | | 5x+5=x-4 | | 10h-28=42 | | 11=7(x+6) | | 6(u+1)=9u-9 | | y=47.3+0.78x | | -7+2x=-17 | | 5x^9y^7+25x^7y^6+10xy= | | 4a-13=-13 | | -3y-11=-2 | | 3y+12=15 | | 8m+4=68 | | (a+1)*x^2+(3a-1)*x+4=0 | | 2y+15=-1 |

Equations solver categories