If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 5x2 = -21 + -7x Solving 5x2 = -21 + -7x Solving for variable 'x'. Reorder the terms: 21 + 7x + 5x2 = -21 + -7x + 21 + 7x Reorder the terms: 21 + 7x + 5x2 = -21 + 21 + -7x + 7x Combine like terms: -21 + 21 = 0 21 + 7x + 5x2 = 0 + -7x + 7x 21 + 7x + 5x2 = -7x + 7x Combine like terms: -7x + 7x = 0 21 + 7x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 4.2 + 1.4x + x2 = 0 Move the constant term to the right: Add '-4.2' to each side of the equation. 4.2 + 1.4x + -4.2 + x2 = 0 + -4.2 Reorder the terms: 4.2 + -4.2 + 1.4x + x2 = 0 + -4.2 Combine like terms: 4.2 + -4.2 = 0.0 0.0 + 1.4x + x2 = 0 + -4.2 1.4x + x2 = 0 + -4.2 Combine like terms: 0 + -4.2 = -4.2 1.4x + x2 = -4.2 The x term is 1.4x. Take half its coefficient (0.7). Square it (0.49) and add it to both sides. Add '0.49' to each side of the equation. 1.4x + 0.49 + x2 = -4.2 + 0.49 Reorder the terms: 0.49 + 1.4x + x2 = -4.2 + 0.49 Combine like terms: -4.2 + 0.49 = -3.71 0.49 + 1.4x + x2 = -3.71 Factor a perfect square on the left side: (x + 0.7)(x + 0.7) = -3.71 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 4c-6+c=16-3c | | -10=p-(-4) | | 88-4x=120 | | 5(2x-4)=11 | | n^2+6x=7 | | 8x-20=-60 | | y=(800+20x)(60-x) | | X-5-9=9-9 | | 11x^2=-5x-1 | | 5t-2(5+4t)=3 | | X-5+5=9+5 | | (x+-6)+9+(2x+-19)=23 | | =(x+-6)+9+(2x+-19) | | X-2=3x+2x-10 | | 4(x+3)=4x+2 | | -70+x^2+(-10x)=0 | | (3x-28)+(3x-30)+x=33 | | (X-6)-2x-19=9 | | X^2-10x=70 | | 5(10z+6)=20z | | -49+x^2+(-10)=0 | | =6y+3 | | 0.75x=p-180 | | -4(4-14g)=-6(-12g+8) | | NP=6y+3 | | X^2-10x-53=-4 | | 2x-4+2x-3-2=3x-1 | | 2(3x-2)+5x=7 | | (36x+53y)-(-36x-30y)= | | 5x-2(3x-5)=2x+6 | | -(x+3)+5.5x=10.5 | | 3(-4y+2)=-11y |