4.9t^2-2.5t-9=0

Simple and best practice solution for 4.9t^2-2.5t-9=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 4.9t^2-2.5t-9=0 equation:


Simplifying
4.9t2 + -2.5t + -9 = 0

Reorder the terms:
-9 + -2.5t + 4.9t2 = 0

Solving
-9 + -2.5t + 4.9t2 = 0

Solving for variable 't'.

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

Divide each side by '4.9'.
-1.836734694 + -0.5102040816t + t2 = 0

Move the constant term to the right:

Add '1.836734694' to each side of the equation.
-1.836734694 + -0.5102040816t + 1.836734694 + t2 = 0 + 1.836734694

Reorder the terms:
-1.836734694 + 1.836734694 + -0.5102040816t + t2 = 0 + 1.836734694

Combine like terms: -1.836734694 + 1.836734694 = 0.000000000
0.000000000 + -0.5102040816t + t2 = 0 + 1.836734694
-0.5102040816t + t2 = 0 + 1.836734694

Combine like terms: 0 + 1.836734694 = 1.836734694
-0.5102040816t + t2 = 1.836734694

The t term is -0.5102040816t.  Take half its coefficient (-0.2551020408).
Square it (0.06507705122) and add it to both sides.

Add '0.06507705122' to each side of the equation.
-0.5102040816t + 0.06507705122 + t2 = 1.836734694 + 0.06507705122

Reorder the terms:
0.06507705122 + -0.5102040816t + t2 = 1.836734694 + 0.06507705122

Combine like terms: 1.836734694 + 0.06507705122 = 1.90181174522
0.06507705122 + -0.5102040816t + t2 = 1.90181174522

Factor a perfect square on the left side:
(t + -0.2551020408)(t + -0.2551020408) = 1.90181174522

Calculate the square root of the right side: 1.379061908

Break this problem into two subproblems by setting 
(t + -0.2551020408) equal to 1.379061908 and -1.379061908.

Subproblem 1

t + -0.2551020408 = 1.379061908 Simplifying t + -0.2551020408 = 1.379061908 Reorder the terms: -0.2551020408 + t = 1.379061908 Solving -0.2551020408 + t = 1.379061908 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.2551020408' to each side of the equation. -0.2551020408 + 0.2551020408 + t = 1.379061908 + 0.2551020408 Combine like terms: -0.2551020408 + 0.2551020408 = 0.0000000000 0.0000000000 + t = 1.379061908 + 0.2551020408 t = 1.379061908 + 0.2551020408 Combine like terms: 1.379061908 + 0.2551020408 = 1.6341639488 t = 1.6341639488 Simplifying t = 1.6341639488

Subproblem 2

t + -0.2551020408 = -1.379061908 Simplifying t + -0.2551020408 = -1.379061908 Reorder the terms: -0.2551020408 + t = -1.379061908 Solving -0.2551020408 + t = -1.379061908 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.2551020408' to each side of the equation. -0.2551020408 + 0.2551020408 + t = -1.379061908 + 0.2551020408 Combine like terms: -0.2551020408 + 0.2551020408 = 0.0000000000 0.0000000000 + t = -1.379061908 + 0.2551020408 t = -1.379061908 + 0.2551020408 Combine like terms: -1.379061908 + 0.2551020408 = -1.1239598672 t = -1.1239598672 Simplifying t = -1.1239598672

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.6341639488, -1.1239598672}

See similar equations:

| 9/4-(-9/10)= | | X/8-1/2=10 | | 10.7-2.4(11.3)= | | 3x^3-x^2-22x+24=0 | | A+b+y+s+e=8b | | 60+30x=450+30x | | -4.1(22.5)= | | n-20=20 | | 3m-3n=4 | | 0.009(9-k)+0.06(k-2)=1 | | 5a(-3a)= | | 11x+1,100=10,000 | | y=-2x^2-7x-60 | | y=-2t^2-7t-60 | | 3(4y-8)=13 | | -3-36= | | X^2+y^2+6x+18y-20=0 | | V^2-6v-5/3v^2-12v-9 | | 2x(x+2)=45 | | 3(y+7)-7y=-19 | | (3x+10)+(7x-3)=180 | | 7.5+-1y+3y=22.5 | | 42xj+18-19j=28 | | -x+4(1)=8 | | 3*x+3*y=22.20 | | 4x^2=-2x+40 | | 9m^2-30m+25=30 | | 6x+4=51 | | f(x)=x^4-24x^2+13 | | (3+I)(7-6i)= | | 14x^10+20x^7=0 | | 30W-(w+6)+(-5w+4)=-(5w+6)+(-8+3w) |

Equations solver categories