Question

Se 9 . 9 =9²=81 então calcule:
a) 12²=
b)20² =
c)16²=
d) 4² + 12 . 5 -√144 +3³

Answer 1

Resposta:

a)12² = 12•12= 144

b)20²= 20•20=400

c)16² =16•16= 256

d) 4²+12×5-√144+3³

=16+12×5-12+27=

=16+60-12+27=

=76-12+27=

=64+27=

=91=

Explicação passo-a-passo:

espero ter ajudado... bons estudos!!!

Answer 2

Boa Noite !!!

$a = 12^{2} \\\\a = 12.12\\\\\small{\boxed{\sf a =144 }}$

$b = 20^{2} \\\\b = 20.20\\\\\small{\boxed{\sf b = 400 }}$

$c = 16^{2} \\\\c = 16.16\\\\\small{\boxed{\sf c = 256 }}$

$d = 4^{2} +12.5-\sqrt{144} +3^{3} \\\\d= 16 + 60-12+27\\\\\small{\boxed{\sf d = 91 }}$

Espero ter ajudado :-)

Att: LDC