Question

sendo:x= -2³+(-3+9)-(-5-2);. y=(-7+15)-(-1-4).(-3-6); z=(-3)³+5⁰-1⁵+(-4)²
calcule:
a) x+z=
b) z-y=
C) x+y+z=
d) x-y-z=
me ajudem e pra hoje​

Answer 1

Resposta:

$x=-2^3+(-3+9)-(-5-2)\\ \\ x=-8+(+6)-(-7)\\ \\ x=-8+6+7\\ \\ x=-8+13\\ \\\boxed{ x=5}$

$y=(-7+15)-(-1-4)\\ \\ y=(+8)-(-5)\\ \\ y=8+5\\ \\\boxed{ y=13}$

$z=(-3)^2+5^0-1^5+(-4)^2\\ \\ z=+9+1-1+16\\ \\ z=26-1\\ \\\boxed{ z=25}$

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$a)\\ \\ x+y=5+13=\boxed{18}\\ \\ b)\\ \\ z-y=25-13=\boxed{12}\\ \\ c)\\ \\ x+y+z=5+13+25=\boxed{43}\\ \\ d)\\ \\ x-y-z=5-13-25=5-38=\boxed{-33}$