Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Examples
easy (10)
x^2 == 2
x^2+3 == 52
x^2-7 == 0
9*x^2-6 == 75
32-2*x^2 == 14
2*(x^2-3) == 12
1/4*x^2+12 == 16
(x-1)^2 == 100
14-2*x^2 == 6
1/4*(17-x^2) == 2
medium (30)
(x-7)^2+3 == 11
(6-2*x)^2 == 81
1/2*(x+9)^2 == 4
(3-x^2)/10 == 2
5*x^2+3*x == 3*x+2
11-(2*x+1)^2 == 5
(6*x-3)^2+6 == 12
(7+2*x)^2 == 7
4-x^2/10 == 6
12-(2*x+3)^2 == 6
x^2 == 5*x
x^2-6*x == 0
6*x+x^2 == 0
x*(x+4) == 0
x*(2*x-4) == 0
3*x^2 == 6*x
3*x == 2*x^2
x*(1-6*x) == 0
(x+5)*(x-8) == 0
(3*x-1)*(x+3) == 0
x^2-2*x == 3
x^2+12*x+20 == 0
x^2-x == 30
x*(x+2) == 8
x*(x-3) == 4
2*x+15 == x^2
4*x == 12-x^2
x^2 == 15-8*x
x^2-9*x+18 == 0
x^2+14*x+24 == 0
difficult (20)
(3*x+5)^2+(x-5)^2 == 40
4*(10-x^2) == -2*x*(2*x+10)
x*(x+12) == 2*x^2
3*(x-2)*(x+6) == 12*x
8*x^2+4*x-24 == (x+3)*(x-8)
3*x^2-11 == (3+2*x)^2
2*x*(x-3)-3 == (x+2)*(x+6)
12*(x^2-3*x)+8 == 56
4*x^2-6*x == x^2+9
(x+1)*(x-5) == (x-2)*(x-3)
x^2+4*x-4 == 0
x^2-6*x == 4
x^2-12*x+34 == 0
2*x^2+4*x-8 == 0
(x-4)*(x-1) == 11
(x-7/2)^2 == 2*(x+4)
x^2-3*x == 3*(x-2)
(4-x)*(1-x) == 3*x
2*x^2 == x*(x+2)+7
(1-x)^2 == x+2