4t^2+16t-15=0

Simple and best practice solution for 4t^2+16t-15=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 4t^2+16t-15=0 equation:


Simplifying
4t2 + 16t + -15 = 0

Reorder the terms:
-15 + 16t + 4t2 = 0

Solving
-15 + 16t + 4t2 = 0

Solving for variable 't'.

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

Divide each side by '4'.
-3.75 + 4t + t2 = 0

Move the constant term to the right:

Add '3.75' to each side of the equation.
-3.75 + 4t + 3.75 + t2 = 0 + 3.75

Reorder the terms:
-3.75 + 3.75 + 4t + t2 = 0 + 3.75

Combine like terms: -3.75 + 3.75 = 0.00
0.00 + 4t + t2 = 0 + 3.75
4t + t2 = 0 + 3.75

Combine like terms: 0 + 3.75 = 3.75
4t + t2 = 3.75

The t term is 4t.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4t + 4 + t2 = 3.75 + 4

Reorder the terms:
4 + 4t + t2 = 3.75 + 4

Combine like terms: 3.75 + 4 = 7.75
4 + 4t + t2 = 7.75

Factor a perfect square on the left side:
(t + 2)(t + 2) = 7.75

Calculate the square root of the right side: 2.783882181

Break this problem into two subproblems by setting 
(t + 2) equal to 2.783882181 and -2.783882181.

Subproblem 1

t + 2 = 2.783882181 Simplifying t + 2 = 2.783882181 Reorder the terms: 2 + t = 2.783882181 Solving 2 + t = 2.783882181 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + t = 2.783882181 + -2 Combine like terms: 2 + -2 = 0 0 + t = 2.783882181 + -2 t = 2.783882181 + -2 Combine like terms: 2.783882181 + -2 = 0.783882181 t = 0.783882181 Simplifying t = 0.783882181

Subproblem 2

t + 2 = -2.783882181 Simplifying t + 2 = -2.783882181 Reorder the terms: 2 + t = -2.783882181 Solving 2 + t = -2.783882181 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + t = -2.783882181 + -2 Combine like terms: 2 + -2 = 0 0 + t = -2.783882181 + -2 t = -2.783882181 + -2 Combine like terms: -2.783882181 + -2 = -4.783882181 t = -4.783882181 Simplifying t = -4.783882181

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.783882181, -4.783882181}

See similar equations:

| -8(G+5)+44=9-9G | | 16=9+n | | -9+x-6x=-7x+2 | | G-17=10(2G+3)-9 | | X+3=x-8 | | E+3*5=2 | | (2v-3)(9-v)=0 | | 0(x)=x^2-5x-36 | | 5=d+3*8 | | 4x+3(-2)=6 | | Z^2+z-iz+-i=0 | | x*x=94 | | 15x^2+43x=-8 | | 25-2u+3-3u=-2u+15 | | 2x+3(4x+6)=172 | | 5/x=2/x-4.2 | | 2=g-4*7 | | 1x-6=3x+10 | | 11x-3+106=180 | | Z^2+z-iz-i=0 | | 11x-3+106=108 | | 8x+15=3x+50 | | 4+3x^2=15 | | X-17=10(2x+3)-9 | | 5=h-9*2 | | 6x+2+140=180 | | lnx-ln(x+5)=5 | | x+6y-7=0 | | 2x^2+7x-70=0 | | Ln(3x^2-14x-5)=1+ln(x^2-x-20) | | -6=4x | | 2x-17+143=180 |

Equations solver categories