rozwiąż równania a) 9x2-(3x-1)2=5 b) (x-4)(x+4)=(x+2)2 c) (4x+3)2-3=(4x-3)(3+4x) d) (1/2x-4)2-(1/2x+2)(1/2=2)=0
a)
9x²-9x²+6x-1=5
6x=6 | \6
x=6
b)
x²-16=x²+4x+4
x²-x²-4x=-12
-4x=-12 | \(-4)
x=3
c)
16x²+24x+9-3=16x²-9
16x²-16x²+24x=-15
24x=-15 | \24
x=-⅝
d)
¼x²-4x+16-¼x²-2x-4=0
-6x=-12 | \(-6)
x=2
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a)
9x²-9x²+6x-1=5
6x=6 | \6
x=6
b)
x²-16=x²+4x+4
x²-x²-4x=-12
-4x=-12 | \(-4)
x=3
c)
16x²+24x+9-3=16x²-9
16x²-16x²+24x=-15
24x=-15 | \24
x=-⅝
d)
¼x²-4x+16-¼x²-2x-4=0
-6x=-12 | \(-6)
x=2