On line Solution of Monovariate Equation:
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Overview: 1 questions will be solved this time.Among them ☆1 equations
[ 1/1 Equation] Work: Find the solution of equation (x+1)(x+7) = 391 . Question type: Equation Solution:Original question:
(
x
+
1
)
(
x
+
7
)
=
391
Remove the bracket on the left of the equation:
Left side of the equation =
x
(
x
+
7
)
+
1
(
x
+
7
)
=
x
x
+
x
×
7
+
1
(
x
+
7
)
=
x
x
+
7
x
+
1
x
+
1
×
7
=
x
x
+
7
x
+
1
x
+
7
=
x
x
+
8
x
+
7
The equation is transformed into :
x
x
+
8
x
+
7
=
391
After the equation is converted into a general formula, it is converted into: ( x + 24 )( x - 16 )=0 From x + 24 = 0 x - 16 = 0 it is concluded that:: x1=-24 x2=16 There are 2 solution(s).