X2+3x+x+3=x(x+1)+3(x+1)=(x+3)(x+1)
x + x + 1 + x + 2 + x + 3 = -144x + 6 = 144x = 8x = 2
(x+3)(x+4) = x²+7x+12
x + 3 + 10 = x + 13
It is: x^2 -9 = (x +3)(x -3)
It is 123.99
When x = 3, 3 plus x = 6.
X2+3x+x+3=x(x+1)+3(x+1)=(x+3)(x+1)
9
x + x + 1 + x + 2 + x + 3 = -144x + 6 = 144x = 8x = 2
x = 0
x(x + 3) + 3(x + 3) = x2 + 3x + 3x + 9 = x2 + 6x + 9 = (x + 3)(x + 3) = (x + 3)2
X 3 plus x-142 plus x is an equation equal to x3+2x-142.
(x+5)(x+3) = x^2 +8x+15
(x+3)(x+4) = x²+7x+12
x + 3 + 10 = x + 13
6*x + 30 + 4*x = x+3; the solution is x = -3