Question

A) 3 (x + y) = B) 2 (a + b) = C) 7 (x - 2y)=
D) 2 (3 a + 4b) =

Answer 1

3(x + y) = 3x + 3y

===============================

2(a - b) = 2a - 2 b

=============================

7(x.2y) = 14xy ou 7( x - 2y) = 7x - 14y não entendi bem

=================================================

2(3a + 4b) = 6a + 8b

=================================

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

==========================================

a - (a - 1) = a - a + 1 = 1 ou a(a - 1) = a² - a não entendi bem

=======================================================

a - ( a + b) = a - a + b = b ou a .(a + b) = a² + ab

============================================

x²(x - 1) = x³ - x²

==========================================