1.pole prostokata 2a-2 i a+3 jest rowne ?
(2a-2) * (a+3)= 2a²+6a-2a-6=2a²+4a-6
x = 2a - 2
y = a +3
P = x * y
P = (2a - 2)(a +3) = 2a * a + 2a * 3 - 2 * a - 2 * 3 = 2a² + 6a - 2a - 6 = 2a² + 4a - 6
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(2a-2) * (a+3)= 2a²+6a-2a-6=2a²+4a-6
x = 2a - 2
y = a +3
P = x * y
P = (2a - 2)(a +3) = 2a * a + 2a * 3 - 2 * a - 2 * 3 = 2a² + 6a - 2a - 6 = 2a² + 4a - 6