Oblicz:
(7xy+8y)²=
(49x²y²+64y²)=113x²2y²
= (7xy)² +2*7xy*8y + (8y)² =
Stosuje wzór skróconego mnożenia :
(a +b)² = a² + 2*a*b + b²
= 49x²y² + 112xy² + 64y²
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(49x²y²+64y²)=113x²2y²
Oblicz:
(7xy+8y)²=
= (7xy)² +2*7xy*8y + (8y)² =
Stosuje wzór skróconego mnożenia :
(a +b)² = a² + 2*a*b + b²
= 49x²y² + 112xy² + 64y²