Question

4.Simplifique as expressoes
A) (x+1) elevado a 2 + ( x+2)elevado a 2
B) (2x + 1)elevado a 2 + (3x+1)elevado a 2
C)5x-(2x+3)elevado a 2
D)(x+5)elevado a 2 - x(x+3)

Answer 1

a)
(2x+1)²+(3x+1)²=
4x²+4x+1+9x²+6x+1=
13x²+10x+2

b)
5x-(2x+3)²=
5x-(4x²+12x+9_=
5x-4x²-12x-9=
-4x²-7x-9

c)
(x+5)²-x(x+3)=
x²+10x+25-x²-3x=
7x+25