Question

ME AJUDEM POR FAVORRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! TO A PONTO DE RODAR E O CADERNO PODE ME SALVA PFV ME AJUDEM PFV

Answer 1

a)x^2-81=
x^2=81
x=raiz 81
x=9

b)100-a^2=
100=a^2
raiz 100=a
10=a

c)b^2-4/25=
b^2=4/25
b=raiz 4/25
b=2/5

d)1-m^2.n^2

e)16x^2-9x^2=
7x^2=
x^2=1/7
x=raiz 1/7

f) 1/9-4y^2
1/9=4y^2
36y^2=1
y^2=1/36
y=raiz 1/36
y=1/6

h)b^2-c^2/16
b^2=c^2/16
16b^2=c^2
b^2=c^2/16
b=raiz c^2/16
b=c/4

i)1/25-a^2/4=
1/25=a^2/4
25a^2=4
a^2=4/25
a=raiz 4/25
a=2/5

j)a^2b^4-x^2=
a^2b^4=x^2
raiza^2b^4=x
ab^2=x

k)a^6-b^6=
a^6=b^6

l)r^2-8^1.8^4=
r^2-8^5=
r^2=8^5
r^2=raiz 4096
r=2raiz2

2)xy-x=
x(y-1)=


b)ac+2bc+ad+2bd=
a(c+d)+2b(c+d)

d)2a^3+6ax-3a^2-9bx=
a^2(2a-3b)+3x(2a-3b)


e)a^2-m^2
a^2=m^2

f) 2an-n-2an-n=
_2n=

g)12a^4x^2+18a^3x^3
2a^2x^2(6a^2+9ax)