Question

3+x(5-x)=(2-x)(x+3)
7-x(3+x)=(x+2)(5-x)
Помогите решить

Answer 1

3 + - x^2 + 5*x = (2-x)*(x+3)
3 + - x^2 + 5*x = 6 - x - x^2
-3 + 6*x = 0
6*x = 3
x = 3 / (6)
x = 1/2
x1 = 0.5

7 - x^2 - 3*x = (x+2)*(5-x)
7 - x^2 - 3*x = 10 - x^2 + 3*x
-3 - 6*x = 0
-6*x = 3
x = 3 / (-6)
x = -1/2
x1 = -0.5

Answer 2

3+x(5-x)=(2-x)(x+3)
3+5x-x^2=2x+6-x^2-3x
2x=3
x=1.5

7-x(3+x)=(x+2)(5-x)
7-3x-x^2=5x-x^2+10-2x
0x=3
x=0