Question

Escreva cada polinômio na forma reduzida (x+3)+2x-6x

Answer 1

a)
(x+3)²+2x²-6x
= x²+6x+9+2x²-6x
= 3x²+9

b)
10y+(y-6)²-30+y²
=10y +y²-12y+36-30+y²
=-2y+2y²+6

c)
(z+4)(z-4)-z²+z
=z²-16-z²+z
=z-16

d)
(w-a)²-(w+a)²
= w²-2wa+a²-(w²+2wa+a²)
=w²-2wa+a²-w²-2wa-a²
= -4wa

e)
(k-b)²+(k-b)(k+b)-(b+2k)²
=k²-2kb+b²+k²-b²-b²-4kb-4k²
= -2k²-6kb-b²