1 Encontre as raízes e justifique: a) 36
porque
II
b) 81 =
porque
X х
=
c) √121 =
porque
d) 7100
porque
e) 144
porque
X Х
f) 225
porque
2 Complete o quadro.
6
8
12.
9
5
10
7
11
4
3
2
1
O
Número
49
9
Seu
quadrado​

4

step-by-step explanation:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

2 2/3 hours duhh silly

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870