If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -1x2 + 8x = 21 Reorder the terms: 8x + -1x2 = 21 Solving 8x + -1x2 = 21 Solving for variable 'x'. Reorder the terms: -21 + 8x + -1x2 = 21 + -21 Combine like terms: 21 + -21 = 0 -21 + 8x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 21 + -8x + x2 = 0 Move the constant term to the right: Add '-21' to each side of the equation. 21 + -8x + -21 + x2 = 0 + -21 Reorder the terms: 21 + -21 + -8x + x2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -8x + x2 = 0 + -21 -8x + x2 = 0 + -21 Combine like terms: 0 + -21 = -21 -8x + x2 = -21 The x term is -8x. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8x + 16 + x2 = -21 + 16 Reorder the terms: 16 + -8x + x2 = -21 + 16 Combine like terms: -21 + 16 = -5 16 + -8x + x2 = -5 Factor a perfect square on the left side: (x + -4)(x + -4) = -5 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 5(r+9)-2(1-9)=1 | | 1/3y-5=3 | | (x^3+x^2+x+1)(11x-9)=0 | | -2+-13= | | -4(4y-6)-y=-2(y-4) | | f(-3)=(1/3)^x | | 26x+18=5(5x+7) | | 6-3x-11x+4= | | 9x-5x=6x+7x | | 9x+9=2x+9 | | (5x+8)-(7+4x)=8 | | 7-7(3c-2)+4(c-7)+3c=0 | | 25-2x=17+2x | | 11x+7y=2 | | 8n=-160 | | (5x+8)-(7+4y)=8 | | 5=x-17 | | 24=6(5-2a) | | -29=-25+r | | 0=1600-60x | | -9=m-(-5) | | -9/12-(-7/4) | | 7y-3x= | | 15x+(-4x)= | | 1/7*1/6 | | 2xy/5y | | -480=20x | | 4-p=5p+16 | | 522=29x | | 4x+5-2x=-19 | | 3[4x-(2x-7)]= | | a/1/a2= |