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Simplifying (x + 1)(x + 4) = x(x + 7) Reorder the terms: (1 + x)(x + 4) = x(x + 7) Reorder the terms: (1 + x)(4 + x) = x(x + 7) Multiply (1 + x) * (4 + x) (1(4 + x) + x(4 + x)) = x(x + 7) ((4 * 1 + x * 1) + x(4 + x)) = x(x + 7) ((4 + 1x) + x(4 + x)) = x(x + 7) (4 + 1x + (4 * x + x * x)) = x(x + 7) (4 + 1x + (4x + x2)) = x(x + 7) Combine like terms: 1x + 4x = 5x (4 + 5x + x2) = x(x + 7) Reorder the terms: 4 + 5x + x2 = x(7 + x) 4 + 5x + x2 = (7 * x + x * x) 4 + 5x + x2 = (7x + x2) Add '-1x2' to each side of the equation. 4 + 5x + x2 + -1x2 = 7x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 4 + 5x + 0 = 7x + x2 + -1x2 4 + 5x = 7x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 4 + 5x = 7x + 0 4 + 5x = 7x Solving 4 + 5x = 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 4 + 5x + -7x = 7x + -7x Combine like terms: 5x + -7x = -2x 4 + -2x = 7x + -7x Combine like terms: 7x + -7x = 0 4 + -2x = 0 Add '-4' to each side of the equation. 4 + -4 + -2x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -2x = 0 + -4 -2x = 0 + -4 Combine like terms: 0 + -4 = -4 -2x = -4 Divide each side by '-2'. x = 2 Simplifying x = 2
| 3x^2+3x-4= | | 5x^2-10x-6= | | 3(2x-1)-(x+5)=-4(x-2)+(x+2) | | 4(x-3)-3(2x-4)=2(x-5) | | 4p+2=5(6p) | | 3(2y-6)=38 | | 9x-12=33 | | 68=-16t^2+64t+8 | | x^2=272 | | s^2=4s | | s^2=5s | | 0=-64-16t^2+64t+12 | | 64=-16t^2+64t+12 | | x^2-16x+63=(x-7)(x-9) | | s^2=6s | | 80+50+50=180 | | 5c+9(12-c)=76whatisc | | 9(4x^2+12x+9)=16 | | (6t+13)(t+12)=0 | | 6=b | | 81=-9x | | 81=-9 | | 2n=24 | | 21=-7x | | (x)900+(30-x)(1200)=(30)(1000) | | x*900+(30-x)*1200=30*1000 | | 45=5x | | 3(x+1)-2=4(2x-1) | | 7x-2=3x+42 | | 247+99=436 | | 2x/5=12/10 | | 247+189=436 |