4r(r+7)=-49

Simple and best practice solution for 4r(r+7)=-49 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 4r(r+7)=-49 equation:


Simplifying
4r(r + 7) = -49

Reorder the terms:
4r(7 + r) = -49
(7 * 4r + r * 4r) = -49
(28r + 4r2) = -49

Solving
28r + 4r2 = -49

Solving for variable 'r'.

Reorder the terms:
49 + 28r + 4r2 = -49 + 49

Combine like terms: -49 + 49 = 0
49 + 28r + 4r2 = 0

Factor a trinomial.
(7 + 2r)(7 + 2r) = 0

Subproblem 1

Set the factor '(7 + 2r)' equal to zero and attempt to solve: Simplifying 7 + 2r = 0 Solving 7 + 2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2r = 0 + -7 2r = 0 + -7 Combine like terms: 0 + -7 = -7 2r = -7 Divide each side by '2'. r = -3.5 Simplifying r = -3.5

Subproblem 2

Set the factor '(7 + 2r)' equal to zero and attempt to solve: Simplifying 7 + 2r = 0 Solving 7 + 2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2r = 0 + -7 2r = 0 + -7 Combine like terms: 0 + -7 = -7 2r = -7 Divide each side by '2'. r = -3.5 Simplifying r = -3.5

Solution

r = {-3.5, -3.5}

See similar equations:

| -7-5u=1 | | 8+2x=x-2 | | 2+3x=38whatisx | | Xy-3y=14 | | -7+5u=1 | | ((Log(1/4) | | z/-7=-7 | | 15h=90 | | 24.3+n=125.32 | | m-25.4=105 | | 6(x-1)=2(x-3) | | y-10+2=15 | | -26=-8+3a | | 2(4x+3)+3(x+2)=9x+16 | | -10(s+3)=-68 | | Y=3/2•4/3-4 | | (1-49x^2)= | | -26=-8+30 | | (1/4)-(1/m) | | A^2-18a-4=4 | | x+.6666666667x+.8=1.333333333(X+.4) | | 4x^2-195x+1755=0 | | 5x-2=-3x+7 | | 2y+4=5y-9 | | 2(2x-5)=12whatisx | | 4/9x=2x | | 3/4x100 | | (1000x-3000)/1000x=40/100 | | x*x-15=7 | | 6(2l+9)=66 | | 1000x-3000/1000x=40/100 | | 3(a-3)=39 |

Equations solver categories