Cześć, proszę o rozwiązanie. Z góry dziękuje..
a)
b)
c)
d)5x+3=8+5x
a) x + 2 + x²= (x-5)²
x+ 2 + x²= x²+25
x= 23
b) (3-x)²= x² +x
9+x² = x² + x
9= x
c) 2(2+x)²= x +3x +2x²
2(4+ x²) = 4x +2x²
8=4x /4
x=2
0=5
d) 5x+3=8+5x
3=/=8
c)2*(4+4x+x^2)=4x+2x^2
8+8x+2x^2=4x+2x^2
4x=-8/4
x=-2
b)9-6x-x^2=x^2+x
-7x=-9
x=9/7=1 i 2/7
a)x+2+x^2=(x-5)^2
x+2+x^2=x^2-10x+25
11x=23 /:11
x=2 i 3/11
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a) x + 2 + x²= (x-5)²
x+ 2 + x²= x²+25
x= 23
b) (3-x)²= x² +x
9+x² = x² + x
9= x
c) 2(2+x)²= x +3x +2x²
2(4+ x²) = 4x +2x²
8=4x /4
x=2
d)5x+3=8+5x
0=5
d) 5x+3=8+5x
3=/=8
c)2*(4+4x+x^2)=4x+2x^2
8+8x+2x^2=4x+2x^2
4x=-8/4
x=-2
b)9-6x-x^2=x^2+x
-7x=-9
x=9/7=1 i 2/7
a)x+2+x^2=(x-5)^2
x+2+x^2=x^2-10x+25
11x=23 /:11
x=2 i 3/11