Solution inequality:
Directly input the univariate inequality (that is, the inequality containing only one variable), set the angular unit (radian or angle) of the trigonometric function, and click the "Next" button to obtain the solution set of the inequality.
It supports mathematical functions (including trigonometric functions).
Overview: 1 questions will be solved this time.Among them ☆1 equations
[ 1/1 Equation] Work: Find the solution of equation (x+3)(x+6) = 0 . Question type: Equation Solution:Original question:
(
x
+
3
)
(
x
+
6
)
=
0
Remove the bracket on the left of the equation:
Left side of the equation =
x
(
x
+
6
)
+
3
(
x
+
6
)
=
x
x
+
x
×
6
+
3
(
x
+
6
)
=
x
x
+
6
x
+
3
x
+
3
×
6
=
x
x
+
6
x
+
3
x
+
18
=
x
x
+
9
x
+
18
The equation is transformed into :
x
x
+
9
x
+
18
=
0
After the equation is converted into a general formula, it is converted into: ( x + 6 )( x + 3 )=0 From x + 6 = 0 x + 3 = 0 it is concluded that:: x1=-6 x2=-3 There are 2 solution(s).