Rozłóż wyrażenia na czynniki korzystając z odpowiedniego wzoru skróconego mnożenia a)(5p+3q)^2-25 b)(2x+3)^2-(x-1)^2
a)
(5p +3q)^2 -25 =
= (5p + 3q)^2 -5^2 =
=(5p + 3q -5)(5p + 3q +5)
b)
(2x + 3)^2 -(x -1)^2 =
=(2x +3 - (x-1))(2x+3 +(x-1))=
= (2x + 3 -x +1)(2x+3+x-1)=
=( x +4 )(3x +2)
a^2 - b^2 = (a-b)(a+b)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a)
(5p +3q)^2 -25 =
= (5p + 3q)^2 -5^2 =
=(5p + 3q -5)(5p + 3q +5)
b)
(2x + 3)^2 -(x -1)^2 =
=(2x +3 - (x-1))(2x+3 +(x-1))=
= (2x + 3 -x +1)(2x+3+x-1)=
=( x +4 )(3x +2)
a^2 - b^2 = (a-b)(a+b)