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a fost răspuns

VA ROGG AJUTATIMAA!!!1) (X+3)²+(x-3)²=?
2) (3X+1)²+(x+1/2)²=?
3) (4x-1)² - (4X+1)²=?
4) (3-X)² - (X-8)²=?
5) (X²+X+3)² - (X²-2)=?
6) (X²+X-1)(X²+X+1)=?
VA ROGGG SA MA AVUTATII!!!

Răspuns :

1) (X+3)²+(x-3)²=x²+6x+9+x²-6x+9=2x²+18    :2
=x²+9

2) (3X+1)²+(x+1/2)²=9x²+6x+1+x²+2x/2+1/4=10x²+7x+1/4=40x²+28x+1
3) (4x-1)² - (4X+1)²=16x²-8x+1-16x²-8x-1=-16x
4) (3-X)² - (X-8)²==9-6x+x²-x²+16x-64=10x-55
5) (X²+X+3)² - (X²-2)=x⁴+x³+3x²+x³+x²+3x+3x²+3x+3-x²+2=x⁴+2x³+6x²+6x+5
6) (X²+X-1)(X²+X+1)==x⁴+x³+x²+x³+x²+x-x²-x-1=x⁴+2x³+x²-1

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