(u+7)(u-3)=

Simple and best practice solution for (u+7)(u-3)= 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 (u+7)(u-3)= equation:


Simplifying
(u + 7)(u + -3) = 0

Reorder the terms:
(7 + u)(u + -3) = 0

Reorder the terms:
(7 + u)(-3 + u) = 0

Multiply (7 + u) * (-3 + u)
(7(-3 + u) + u(-3 + u)) = 0
((-3 * 7 + u * 7) + u(-3 + u)) = 0
((-21 + 7u) + u(-3 + u)) = 0
(-21 + 7u + (-3 * u + u * u)) = 0
(-21 + 7u + (-3u + u2)) = 0

Combine like terms: 7u + -3u = 4u
(-21 + 4u + u2) = 0

Solving
-21 + 4u + u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-7 + -1u)(3 + -1u) = 0

Subproblem 1

Set the factor '(-7 + -1u)' equal to zero and attempt to solve: Simplifying -7 + -1u = 0 Solving -7 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1u = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1u = 0 + 7 -1u = 0 + 7 Combine like terms: 0 + 7 = 7 -1u = 7 Divide each side by '-1'. u = -7 Simplifying u = -7

Subproblem 2

Set the factor '(3 + -1u)' equal to zero and attempt to solve: Simplifying 3 + -1u = 0 Solving 3 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1u = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1u = 0 + -3 -1u = 0 + -3 Combine like terms: 0 + -3 = -3 -1u = -3 Divide each side by '-1'. u = 3 Simplifying u = 3

Solution

u = {-7, 3}

See similar equations:

| 7-(2x-1)=8x | | 2x+(x-3)=45 | | (6u-6v)(3u+4v-5)= | | 2a-1-12n-24=0 | | 6x-(3+8x)= | | -119+3x=-2x+66 | | 2-2b=-(7b-2) | | 26x+28=22x+50 | | 3.5(34.34+-0.2857142857y)+y=120.19 | | 5x^2-28x=12 | | 9(8k-5)=-621 | | (-2.6)(8.7)= | | 8h+4=8h-8 | | -10(2+x)=-90 | | 2x+10=3x-21 | | 3.5x+1y=120.19 | | 2x^2+5-42=0 | | 0.6x+0.2(10)=0.5(x+10) | | 31+5m=5-(4m+1) | | (8x+4)+6=0 | | 20=(2x-z)(z+2) | | 6v+5x=4 | | 42=(2x+8)(w) | | x(5-6X)=0 | | -9(-8+r)=-99 | | 80j^2-95+15=0 | | (6x-20)=(2x+36) | | 16-ln(5-x)=0 | | x(x-20)+3(x-20)=0 | | 20+4n=-6(3n-7) | | 9r^2-39r+44=4 | | 20=(2x-a)(a+2) |

Equations solver categories