calcule os produtos notaveis
a) (x-3)²
b)(5x-1)
c)(x3+4)²
d)(x+1/16)²
e)(2x+10)²
f)(x+2).(x+4)
g(x+1).(x+4)
h)(x+1/2.(x-1/4)
i)(x+5).(x-3)
j)(x-8).(x-10)
k)(x+1).(x-1)
l)(3x+y).(3x-y)
m)(x+5).(x-5)
n)(2x+5).(2x-5)
o)(x1/x).(x+1)
p)(x²+1).(x²-1)
Respostas
Resposta:
a) x² - 6x + 9
b) 25x² - 10x + 1
c) x^6 + 8x³ + 16
d) x² + x/8 + 1/256
e) 4x² + 40x + 100
f) x² + 6x + 8
g) x² + 5x + 4
h) x² + 1/4x - 1/8
i) x² + 2x - 15
j) x² - 18x + 80
k) x² - 1
l) 9x² - y²
m) x² - 25
n) 4x² - 25
o) x + 1
p) x^4 - 1
Explicação passo-a-passo:
a) (x-3)² = (x - 3)(x - 3) = x² - 3x - 3x + 9 = x² - 6x + 9
b)(5x-1) ² = (5x - 1)(5x - 1) = 25x² - 5x - 5x + 1 = 25x² - 10x + 1
c)(x³+4)² = (x³ + 4)(x³ + 4) = x^6 + 4x³ + 4x³ + 16 = x^6 + 8x³ + 16
d)(x+1/16)² = (x + 1/16)(x + 1/16) = x² + x/16 + x/16 + 1/256 = x² + x/8 + 1/256
e)(2x+10)² = (2x + 10)(2x + 10) = 4x² + 20x + 20x + 100 = 4x² + 40x + 100
f)(x+2).(x+4) = x² + 4x + 2x + 8 = x² + 6x + 8
g(x+1).(x+4) = x² + 4x + x + 4 = x² + 5x + 4
h)(x+1/2.(x-1/4) = x² - 1/4x + 1/2x - 1/8 = x² + 1/4x - 1/8
i)(x+5).(x-3) = x² - 3x + 5x - 15 = x² + 2x - 15
j)(x-8).(x-10) = x² - 10x - 8x + 80 = x² - 18x + 80
k)(x+1).(x-1) = x² - x + x - 1 = x² - 1
l)(3x+y).(3x-y) = 9x² - 3xy + 3xy - y² = 9x² - y²
m)(x+5).(x-5) = x² - 5x + 5x - 25 = x² - 25
n)(2x+5).(2x-5) = 4x² - 10x + 10x - 25 = 4x² - 25
o)(x1/x).(x+1) = x/x(x + 1) = x² + x/x = x(x + 1)/x = x + 1
p)(x²+1).(x²-1) = x^4 - x² + x² - 1 = x^4 - 1