Question

упростите выражение
-24ab+3(4a+b)^2

Answer 1

$-24ab+3(4a+b)^2=3(4a+b)^2-24ab=\\ =3((4a)^2+2\cdot4a\cdot b+b^2)-24ab=\\ =3(16a^2+8ab+b^2)-24ab=\\ =3\cdot16a+3\cdot8ab+3\cdot b^2-24ab=\\ =48a^2+24ab+3b^2-24ab=48a^2+3b^2=3(16a^2+b^2)$

Answer 2

=-24аб+3(16а^2+8аб+б^2)=
=-24аб+48а^2+24аб+3б^2=48а^2+3б^2=
=3(16а^2+б^2)