x2 + 13x + 36 = 0 so (x+4)(x+9) = 0 so that x = -4 or x = -9
7x + 7 + 6x - 9 = 13x - 2
The factorisation is as follows: 4x² + 12x + 9 = (2x + 3)2.
4x + 3y=9 x=0 y=3
4x + 9 = 254x = 25 - 94 x = 16x= 16/4x= 4
13x - 4x = 9
13x
If you mean 4x-13x = 2, then-9x = 2-9x/-9 = 2/-9x = -2/9
7x-5+2x=3-4x+12 7x+2x-5=3+12-4x 9x-5=15-4x 9x+4x-5=15-4x+4x 13x-5=15 13x-5+5=15+5 13x=20 13x/13=20/13 x=20/13
(4x2 - 13x - 12)/(4x+ 3) = (4x + 3)(x - 4)/(4x + 3) = (4x + 3)(x - 4)/(4x + 3) = x - 4 :)
If you mean: 4x-6+5x = 13x-8 then it works out that x = 1/2 or 0.5
4x2+13x+3 m*n=(4*3)=12 m+n=13 m=12 n=1 (4x/12)=(x/3) (4x+1)(x+3)
7 + 13x = -9 ie 13x = -9 - 7 x = -16/13 or "Minus one and three thirteenths"
x2 + 13x + 36 = (x + 9)(x + 4)
4x + 32x + 9 = 36x + 9
13x+9
-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.