Question

Alguém me ajuda a fazer esse exercício?​

Answer 1

a)

$S' = (1,5x)(1,5x)\\S' =  2,25x^2\\S''= 2x(x)\\S''=2x^2\\Stotal = 2x^2+2,25x^2=4,25x^2\\P'=4(1.5x)\\P'=6x\\P''=2(2x)+2(x)\\P''=4x+2x = 6x\\Ptotal = 6x(2) = 12x$

b)

$S'=2(x^2)\\S'=2x^2\\S''=2x(x)\\S''=2x^2\\Stotal=2x^2+2x^2 = 4x^2\\P'=4(x).(2) = 8x\\P''=2(2x)+2(x)\\P''=4x+2x = 6x\\Ptotal=8x+6x=14x$

c)

$S'=x(x)\\S'=x^2\\S''=2x(x)\\S''=2x^2\\Stotal= 2x^2+x^2 = 3x^2\\P'=4(x) = 4x\\P''= 2(2x)+2(x)\\P''= 4x+2x= 6x\\Ptotal = 4x+6x = 10x$

d)

$S'=1,5x(1,5x)\\S'=2,25x^2(2)\\S'=4,50x^2\\S''=2x(x)+x(x)\\S''=2x^2+x^2\\S''=3x^2\\Stotal = 3x^2+4,50x^2 = 7,5x^2\\P'=4(1,5x)(2)\\P'=8(1,5x) = 12x\\P''=2(2x)+2(x)+4(x)\\P''=4x+6x = 10x\\Ptotal = 10x+12x = 22x$

Espero ter ajudado ;)