Rozwiąż równanie:
1/3x²=5x
-2/7x²+2x=0
x+9=(x-3)²
(4x-6)²=(x-4)(x-9)
(x-2)(x+2)=5
1]
⅓x²=5x
⅓x²-5x=0
x(⅓x-5)=0
x=0 lub ⅓x=5
x=0 lub x=5:⅓=15
2]
x(-2/7x+2)=0
x=0 lub -2/7x=-2
x=0 lub x=-2:-2/7=7
3]
x+9=x²-6x+9
x²-6x-x=9-9
x²-7x=0
x(x-7)=0
x=0 lub x=7
4]
16x²-48x+36=x²-9x-4x+36
16x²-x²-48x+13x+36-36=0
15x²-35x=0
x(15x-35)=0
x=0 lub 15x=35
x=0 lub x=35/15=2⅓
5]
x²-4-5=0
x²-9=0
(x+3)(x-3)=0
x=-3 lub x=3
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1]
⅓x²=5x
⅓x²-5x=0
x(⅓x-5)=0
x=0 lub ⅓x=5
x=0 lub x=5:⅓=15
2]
-2/7x²+2x=0
x(-2/7x+2)=0
x=0 lub -2/7x=-2
x=0 lub x=-2:-2/7=7
3]
x+9=(x-3)²
x+9=x²-6x+9
x²-6x-x=9-9
x²-7x=0
x(x-7)=0
x=0 lub x=7
4]
(4x-6)²=(x-4)(x-9)
16x²-48x+36=x²-9x-4x+36
16x²-x²-48x+13x+36-36=0
15x²-35x=0
x(15x-35)=0
x=0 lub 15x=35
x=0 lub x=35/15=2⅓
5]
(x-2)(x+2)=5
x²-4-5=0
x²-9=0
(x+3)(x-3)=0
x=-3 lub x=3