(8x2)-(13x-16)= -78
5x2 + 3x + 8x2 = 13x2 + 3x = x(13x + 3)
5x-13x+6=0 5x-13x=-6 -8x=-6 -8x/-8=-6/-8 x = 3/4
If you mean: 13*(x -1) +6 then it is 13x -13 +6 = 13x -7 as an expression
x + 13x + 10x = 50 - 6
42 + x2 = 13x ∴ x2 - 13x + 42 = 0 ∴ (x - 6)(x - 7) = 0 ∴ x ∈ {6, 7}
6x^2 -13x+6 = (3x-2)(2x-3) when factorized
If you mean: 4x-6+5x = 13x-8 then it works out that x = 1/2 or 0.5
78 = 60 + 18 = 13 x 6
x = -1.
This is a quadratic equation question which will have two answers: 2x2+42 = x2+13x 2x2-x2-13x+42 = 0 x2-13x+42 = 0 Factorising the equation gives you: (x-6)(x-7) = 0 Therefore: x = 6 or x = 7
-6 = 3 x -2 13 = 5 x 3 - 2 → 5x² + 13x - 6 = (5x - 2)(x + 3)