(5-3х)2-25+6х2 упростить

Question

(5-3х)2-25+6х2 упростить

Answer 1

(5-3х)²-25+6х²=25-30х+9х²-25+6х²=15х²-30х = 15х(х-2)

Answer 2

(5-3x)2-25+6x2
10-6x-25+12x
-15+6x