If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 3x2 + 12x + 21 = 7 Reorder the terms: 21 + 12x + 3x2 = 7 Solving 21 + 12x + 3x2 = 7 Solving for variable 'x'. Reorder the terms: 21 + -7 + 12x + 3x2 = 7 + -7 Combine like terms: 21 + -7 = 14 14 + 12x + 3x2 = 7 + -7 Combine like terms: 7 + -7 = 0 14 + 12x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 4.666666667 + 4x + x2 = 0 Move the constant term to the right: Add '-4.666666667' to each side of the equation. 4.666666667 + 4x + -4.666666667 + x2 = 0 + -4.666666667 Reorder the terms: 4.666666667 + -4.666666667 + 4x + x2 = 0 + -4.666666667 Combine like terms: 4.666666667 + -4.666666667 = 0.000000000 0.000000000 + 4x + x2 = 0 + -4.666666667 4x + x2 = 0 + -4.666666667 Combine like terms: 0 + -4.666666667 = -4.666666667 4x + x2 = -4.666666667 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = -4.666666667 + 4 Reorder the terms: 4 + 4x + x2 = -4.666666667 + 4 Combine like terms: -4.666666667 + 4 = -0.666666667 4 + 4x + x2 = -0.666666667 Factor a perfect square on the left side: (x + 2)(x + 2) = -0.666666667 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 3x-21=-7y | | 3/4t_2=1/4 | | 24n+24+4n= | | 7+x-3=21 | | k^2+k-12= | | 9x-3=4x+8 | | -7.8=2r+4.4 | | Y-12=-14(x-5) | | (6c+5)+c=5 | | n^2-9n+18= | | 4/6=25/n | | M/5.9=3.3/6.1 | | 5x-32=10x+58 | | p^2+13p+30= | | -8(-2y-6)-5=-85 | | 48g-24=-(3G+4) | | 2a-7=(-9) | | 2/9/.3=x/27 | | r^2+7r-30= | | X/3-4=-11 | | 6a+12b=6a+18 | | 16w-48+4(-1-5w)=0 | | 2x^2=10x+28 | | 5-4x=-3x+16 | | 15y-8y= | | c*a*t*s=3*d*o*g*s | | 15n^2+31n+14=0 | | 9(x-4)+12-6(3+x)-10x=63 | | x^2+7r-30= | | 10(x+3)+5+3x=70 | | 5x+x=3x-4x | | w*a*r*r*i*o*r=100 |