7x^2+42x-49=0

Simple and best practice solution for 7x^2+42x-49=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 7x^2+42x-49=0 equation:


Simplifying
7x2 + 42x + -49 = 0

Reorder the terms:
-49 + 42x + 7x2 = 0

Solving
-49 + 42x + 7x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-7 + 6x + x2) = 0

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

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

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

Solution

x = {-7, 1}

See similar equations:

| 20-10x=5x+77 | | 3t+7t+9t=-19 | | 2x+3+y=21 | | -4b=-15 | | y+2x-5x+9=2 | | F(x)=12x-11x-10 | | 9b^2-12b+4=0 | | -8b--14b+8=-10 | | -3(7p+5)-2(3-17p)=3(8+4p) | | 363012=14(X)+0.18(X) | | 5x-3(x-3)=-4+5x-8 | | 64p/8p | | 8(y+10)= | | (2x+13)+(10x)=145 | | 10x-6+14x-17x+13= | | -14x+3(2x-7)=41 | | w+7w-144=0 | | X^2x+4=0 | | 20000=14(X)+0.18(X) | | 3.2xn=0.96 | | 3x=-4y+10 | | 135=(1+45x)+(23x) | | 9(x+6)=7 | | 8x+1y=12.89 | | 5x^3+35x^2+45x=5x^2 | | 3n-18=1n-16 | | 7m-9=-51 | | 200=14(X)+0.18(X) | | F(X)=12x-9 | | -2(t-6)-(t+2)=4 | | -8-12x+(-14x)+17x+13= | | 4x+3y=11.67 |

Equations solver categories