Question

1 - 1.Resolva:
a) (3+2y ).(3-2y)=

b)(4x-3).(4x+3)=

c)(5x-2 ).(5x+2)=

d(9x-5).(9x+5)=

Answer 1

Resposta:

$A)9-4y^{2}\\B)16x^{2} -9\\C)25x^{2} -4\\D)81x^{2} -25$