Respuesta:
s=(x+3)²+(x+4)² - (x+1)² - (x-5)(x-7)
s=x²+2(x)(3)+3²+x²+2(x)(4)+4²-(x²+2(x)(1)+1²)-(x²-(5+7)x+(5)(7))
s=x²+6x+9+x²+8x+16-x²-2x-1-x²+12x-35
s=24x-11
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Respuesta:
s=(x+3)²+(x+4)² - (x+1)² - (x-5)(x-7)
s=x²+2(x)(3)+3²+x²+2(x)(4)+4²-(x²+2(x)(1)+1²)-(x²-(5+7)x+(5)(7))
s=x²+6x+9+x²+8x+16-x²-2x-1-x²+12x-35
s=24x-11