(8d-1)*(8d-1)=81

Simple and best practice solution for (8d-1)*(8d-1)=81 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 (8d-1)*(8d-1)=81 equation:


Simplifying
(8d + -1)(8d + -1) = 81

Reorder the terms:
(-1 + 8d)(8d + -1) = 81

Reorder the terms:
(-1 + 8d)(-1 + 8d) = 81

Multiply (-1 + 8d) * (-1 + 8d)
(-1(-1 + 8d) + 8d * (-1 + 8d)) = 81
((-1 * -1 + 8d * -1) + 8d * (-1 + 8d)) = 81
((1 + -8d) + 8d * (-1 + 8d)) = 81
(1 + -8d + (-1 * 8d + 8d * 8d)) = 81
(1 + -8d + (-8d + 64d2)) = 81

Combine like terms: -8d + -8d = -16d
(1 + -16d + 64d2) = 81

Solving
1 + -16d + 64d2 = 81

Solving for variable 'd'.

Reorder the terms:
1 + -81 + -16d + 64d2 = 81 + -81

Combine like terms: 1 + -81 = -80
-80 + -16d + 64d2 = 81 + -81

Combine like terms: 81 + -81 = 0
-80 + -16d + 64d2 = 0

Factor out the Greatest Common Factor (GCF), '16'.
16(-5 + -1d + 4d2) = 0

Factor a trinomial.
16((-1 + -1d)(5 + -4d)) = 0

Ignore the factor 16.

Subproblem 1

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

Subproblem 2

Set the factor '(5 + -4d)' equal to zero and attempt to solve: Simplifying 5 + -4d = 0 Solving 5 + -4d = 0 Move all terms containing d to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -4d = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -4d = 0 + -5 -4d = 0 + -5 Combine like terms: 0 + -5 = -5 -4d = -5 Divide each side by '-4'. d = 1.25 Simplifying d = 1.25

Solution

d = {-1, 1.25}

See similar equations:

| 1/2(8x-10y)-1/4(16x-24y) | | 4x^2-12x+9=81 | | 9+4b=18 | | 4[x+0.25]=7x+37 | | -5x^2+8x=2 | | 2z=1.5z+6 | | 3*x+22=7x-14 | | 72x1/9 | | x+2x+50+3x=180 | | sinx=-1.5 | | x^2+14=16 | | 4x^2+21y+5=0 | | 3x-20/2=-4 | | log(5)(2x+5)=2 | | 4.5(b-w)=180 | | 4x+8x=2x+7+2x-20 | | 6n-8+n=13 | | xa-7=b(a+2) | | 2y^2-20+8=0 | | xa-7=b(x+2) | | 2x+18-6x=-24 | | 8*1+(8+9)-38= | | 3.5y+4.5=1 | | f(x)=4-5 | | 72+36n=-73 | | 14-2h=-1 | | -4-8x-3=17 | | y=-12+-5x+x^2 | | 36q^2-1=0 | | 24/n=12 | | (x+4)(x+3)=2 | | 3/5(10)=−15 |

Equations solver categories