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Simplifying (2x + -1)(x + 2) = x(1 + 2x) Reorder the terms: (-1 + 2x)(x + 2) = x(1 + 2x) Reorder the terms: (-1 + 2x)(2 + x) = x(1 + 2x) Multiply (-1 + 2x) * (2 + x) (-1(2 + x) + 2x * (2 + x)) = x(1 + 2x) ((2 * -1 + x * -1) + 2x * (2 + x)) = x(1 + 2x) ((-2 + -1x) + 2x * (2 + x)) = x(1 + 2x) (-2 + -1x + (2 * 2x + x * 2x)) = x(1 + 2x) (-2 + -1x + (4x + 2x2)) = x(1 + 2x) Combine like terms: -1x + 4x = 3x (-2 + 3x + 2x2) = x(1 + 2x) -2 + 3x + 2x2 = (1 * x + 2x * x) -2 + 3x + 2x2 = (1x + 2x2) Add '-2x2' to each side of the equation. -2 + 3x + 2x2 + -2x2 = 1x + 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -2 + 3x + 0 = 1x + 2x2 + -2x2 -2 + 3x = 1x + 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -2 + 3x = 1x + 0 -2 + 3x = 1x Solving -2 + 3x = 1x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -2 + 3x + -1x = 1x + -1x Combine like terms: 3x + -1x = 2x -2 + 2x = 1x + -1x Combine like terms: 1x + -1x = 0 -2 + 2x = 0 Add '2' to each side of the equation. -2 + 2 + 2x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 2x = 0 + 2 2x = 0 + 2 Combine like terms: 0 + 2 = 2 2x = 2 Divide each side by '2'. x = 1 Simplifying x = 1
| 3p+2=2p+7 | | x^2+23x+130=0 | | -39+2=2p+7 | | 12(w+6)= | | 7m+6=4m-3 | | x(x+x)=x-3+4 | | x/3+7=-x/6 | | n=m-5/6 | | 14=3k-7 | | 3a+4b=84 | | (6a-4)/8-(4-2a)/4=-6 | | 9+-7*5= | | (1+2x)(x-5)=0 | | 9+-7*1= | | k/5-4=-8 | | 9x+19=3x+199 | | 9+-7*0= | | 9+7*0= | | 5(x+13)=190 | | 2n+12=20 | | 1.6-d=13 | | -7=b/4 | | -12x+3y=1 | | 5217=47(p+25) | | 2X+7Y=60 | | 7y-4x=3 | | 5+(n-1)(1/6)= | | (x+2)(2x-3)=5x^2+x-114 | | (5x^2+26x+9)/(x+4) | | b/8=6 | | 41/2+3/16 | | z/3.75=4 |