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Simplifying (x + 3)(x + 5) = -7 Reorder the terms: (3 + x)(x + 5) = -7 Reorder the terms: (3 + x)(5 + x) = -7 Multiply (3 + x) * (5 + x) (3(5 + x) + x(5 + x)) = -7 ((5 * 3 + x * 3) + x(5 + x)) = -7 ((15 + 3x) + x(5 + x)) = -7 (15 + 3x + (5 * x + x * x)) = -7 (15 + 3x + (5x + x2)) = -7 Combine like terms: 3x + 5x = 8x (15 + 8x + x2) = -7 Solving 15 + 8x + x2 = -7 Solving for variable 'x'. Reorder the terms: 15 + 7 + 8x + x2 = -7 + 7 Combine like terms: 15 + 7 = 22 22 + 8x + x2 = -7 + 7 Combine like terms: -7 + 7 = 0 22 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-22' to each side of the equation. 22 + 8x + -22 + x2 = 0 + -22 Reorder the terms: 22 + -22 + 8x + x2 = 0 + -22 Combine like terms: 22 + -22 = 0 0 + 8x + x2 = 0 + -22 8x + x2 = 0 + -22 Combine like terms: 0 + -22 = -22 8x + x2 = -22 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 = -22 + 16 Reorder the terms: 16 + 8x + x2 = -22 + 16 Combine like terms: -22 + 16 = -6 16 + 8x + x2 = -6 Factor a perfect square on the left side: (x + 4)(x + 4) = -6 Can't calculate square root of the right side. The solution to this equation could not be determined.
| -12x^3+3x-15=0 | | 6x=36+12 | | r=7/2cm | | 500*x=2500 | | 5(2+10g)= | | 8(1+6h)= | | (5w+1)(6)= | | 4(1+8g)= | | 2(2+m)= | | 3(6h+2)= | | 7(3m+1)= | | 6b+36=9-3b | | 2(5a-7)= | | 2n-1-3a=5n-7-3n | | 5(2+9j)= | | 4m^2+12m-11=0 | | W^2+1W+20=0 | | 42c+18= | | 5(1+7m)= | | 3b+36=9 | | (b+1)(3)= | | 4z^2-20z+1=0 | | 4(1+2h)= | | 7(1+6m)= | | 2(1+5k)= | | X=10/tan36° | | y(xy+2(x^2)(y^2))dx+x(xy-(x^2)(y^2))dy=0 | | 2s^2-20s=0 | | 3(9h+2)= | | 16z+18= | | (1+4b)(3)= | | .07x=7.28 |