Question

s=(x + 3)al cuadrado+ (x + 4)al cuadrado - (x + 1)al cuadrado - (x - 5)(x - 7)

Answer 1

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