Resolva as expressões a seguir


a)4²+(-3)³+(-7)²=
b)(-10)².(-4)+(-20).(-4)=
c)(+30)²(-3)+(-4).(+20)=
d)(-20)²(-8)+(+5)(-15)=
e)(-2)³+(-4)³+(-5)⁹+(-6)²=
f)√49+√36+√81=
g)√255-√100+√49=
h)√400-√900+√625=
i)√1024+√2500+√400=
j)√625+√400+√900=

AJUDA É PRA AMANHÃ;(​
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