If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 4x2 + 28x = -81 Reorder the terms: 28x + 4x2 = -81 Solving 28x + 4x2 = -81 Solving for variable 'x'. Reorder the terms: 81 + 28x + 4x2 = -81 + 81 Combine like terms: -81 + 81 = 0 81 + 28x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 20.25 + 7x + x2 = 0 Move the constant term to the right: Add '-20.25' to each side of the equation. 20.25 + 7x + -20.25 + x2 = 0 + -20.25 Reorder the terms: 20.25 + -20.25 + 7x + x2 = 0 + -20.25 Combine like terms: 20.25 + -20.25 = 0.00 0.00 + 7x + x2 = 0 + -20.25 7x + x2 = 0 + -20.25 Combine like terms: 0 + -20.25 = -20.25 7x + x2 = -20.25 The x term is 7x. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7x + 12.25 + x2 = -20.25 + 12.25 Reorder the terms: 12.25 + 7x + x2 = -20.25 + 12.25 Combine like terms: -20.25 + 12.25 = -8 12.25 + 7x + x2 = -8 Factor a perfect square on the left side: (x + 3.5)(x + 3.5) = -8 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 4x^2+28=-81 | | 7x-12=10-4c | | 3(80-9x)=x-93 | | x+2(x+2)=10 | | 3x+8=9+2 | | 7+9t-3=9t+39-7t | | 4x^2+28x+81=0 | | 6x^2+8x+10=2 | | 4x^2+28+81=0 | | 15+(2x-3)=10x-(3-2) | | 4n^2-5n-8=12 | | W3+2w-4/w-1 | | -b^2-5b-6=0 | | x^2+5x+25/6=0 | | (4+4i)/(5+4i) | | x^2+24x+12=0 | | 14*68= | | x/4+y=1/4 | | 522/29 | | 7x+14=2x+29 | | 14x-20=48 | | 2x^2+12=-5 | | 10b(10b-1)= | | n/3=13 | | 9a+16b=-3b | | 3(2x+1)=4(3x-1) | | 8z+5=29 | | 48=2-14x | | 6x+2y=4+2x-3y | | 3(b+5)=2(b-5)+20 | | 555-460= | | 7x+4y=48 |