21x^2-32x=64

Simple and best practice solution for 21x^2-32x=64 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 21x^2-32x=64 equation:


Simplifying
21x2 + -32x = 64

Reorder the terms:
-32x + 21x2 = 64

Solving
-32x + 21x2 = 64

Solving for variable 'x'.

Reorder the terms:
-64 + -32x + 21x2 = 64 + -64

Combine like terms: 64 + -64 = 0
-64 + -32x + 21x2 = 0

Factor a trinomial.
(-8 + -7x)(8 + -3x) = 0

Subproblem 1

Set the factor '(-8 + -7x)' equal to zero and attempt to solve: Simplifying -8 + -7x = 0 Solving -8 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -7x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -7x = 0 + 8 -7x = 0 + 8 Combine like terms: 0 + 8 = 8 -7x = 8 Divide each side by '-7'. x = -1.142857143 Simplifying x = -1.142857143

Subproblem 2

Set the factor '(8 + -3x)' equal to zero and attempt to solve: Simplifying 8 + -3x = 0 Solving 8 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -3x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -3x = 0 + -8 -3x = 0 + -8 Combine like terms: 0 + -8 = -8 -3x = -8 Divide each side by '-3'. x = 2.666666667 Simplifying x = 2.666666667

Solution

x = {-1.142857143, 2.666666667}

See similar equations:

| 2y-14y+16=(y+3) | | (2x-4)(x+6)=936 | | -[7x-(3x+6)]=-5-[4(2x-4)-2x] | | 4.5x+41.2=6.7-7.0x | | X+0.25X=438 | | 2y-3y-11=(y-1) | | x+2=6y | | 4n^2-4=-59 | | -7(p+1)-p-12=-8(p+3)+5 | | 3.2x+52.7=4.3-8.9x | | 9x+4=8x+8 | | (70+4y)=90 | | (70+4y)=40 | | 9(v+3)-3v=2(3v+2)-12 | | -4.9t^2+20t+20=0 | | X+0.25X=0.75 | | u/3-10=14 | | 6y-4y(y-1)+6= | | 9+4(x-3)=4[9-5(x+4)] | | 2.35x+25=5.5225+5x | | 2.8+-0.4(-4)= | | 3log(x-5)=4 | | (6+2w)+l=114 | | (0.05)7x+36=0.4x+1.2 | | 7/3x-3/4=5 | | X+130=x | | 7/3x-3/4 | | 4x+23=-7 | | -7+4u+u=1 | | 1/4x-5/8x=20-47 | | -7u+4u+u=1 | | 3+6x=3(2x+3) |

Equations solver categories