(d+15)(d-4)=0

Simple and best practice solution for (d+15)(d-4)=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 (d+15)(d-4)=0 equation:


Simplifying
(d + 15)(d + -4) = 0

Reorder the terms:
(15 + d)(d + -4) = 0

Reorder the terms:
(15 + d)(-4 + d) = 0

Multiply (15 + d) * (-4 + d)
(15(-4 + d) + d(-4 + d)) = 0
((-4 * 15 + d * 15) + d(-4 + d)) = 0
((-60 + 15d) + d(-4 + d)) = 0
(-60 + 15d + (-4 * d + d * d)) = 0
(-60 + 15d + (-4d + d2)) = 0

Combine like terms: 15d + -4d = 11d
(-60 + 11d + d2) = 0

Solving
-60 + 11d + d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(-15 + -1d)(4 + -1d) = 0

Subproblem 1

Set the factor '(-15 + -1d)' equal to zero and attempt to solve: Simplifying -15 + -1d = 0 Solving -15 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -1d = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -1d = 0 + 15 -1d = 0 + 15 Combine like terms: 0 + 15 = 15 -1d = 15 Divide each side by '-1'. d = -15 Simplifying d = -15

Subproblem 2

Set the factor '(4 + -1d)' equal to zero and attempt to solve: Simplifying 4 + -1d = 0 Solving 4 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1d = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1d = 0 + -4 -1d = 0 + -4 Combine like terms: 0 + -4 = -4 -1d = -4 Divide each side by '-1'. d = 4 Simplifying d = 4

Solution

d = {-15, 4}

See similar equations:

| 42a^2-13a+42= | | (n+3)(n-10)=0 | | (a-7)(a-2)=0 | | -5+3-1= | | 5x+4x=72 | | 8s=-8 | | 36-3x+8=5+5x-1 | | a^7+3a^6b-4a^5b^2= | | 0.33rt-0.46r^2t-rt-r^2t= | | 3y^2-26y+16=0 | | 3(x-10)=2(x-10)+-45 | | 8(x+1)-1=3x-4(2-2x) | | x^2-.4=-1.8x | | 17x-94+12x^2=0 | | -.0625a-2=-2 | | 180-x=3(90-y) | | (m+4)(2m+3)=22+10m | | 3(2x-4)-2x=2x+2 | | 2w^2-20w+42= | | -.428571429s=.75 | | 384+233+23x=423-234x+634x | | 10x+37=4x+13 | | 4x-6=13x-8 | | 24+7r=21 | | 67=.15x+7 | | -(4y-8)-(-3y+5)=-7 | | 12x^3+12x^2+18x=0 | | -3t-2t-5t-6t= | | 4.32(y)+3.45(x)=98.46 | | 2w^2-20+42= | | 64x^2=8x | | 15(q-7)=4(q+4) |

Equations solver categories