해법
을 위해 해결하다 x,(5x+y)2+9x−2y=4x(−8y+3)3
해법
x=50−874y+99+2304y2−2048y3+4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801,x=50−874y+99+2304y2−2048y3−4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801
솔루션 단계
(5x+y)2+9x−2y=4x(−8y+3)3
(5x+y)2+9x−2y 확장 :25x2+10xy+y2+9x−2y
4x(−8y+3)3 확장 :−2048xy3+2304xy2−864xy+108x
25x2+10xy+y2+9x−2y=−2048xy3+2304xy2−864xy+108x
빼다 −864xy+108x 양쪽에서25x2+10xy+y2+9x−2y−(−864xy+108x)=−2048xy3+2304xy2−864xy+108x−(−864xy+108x)
단순화
25x2+874xy−99x+y2−2y=−2048xy3+2304xy2
2304xy2를 왼쪽으로 이동
25x2+874xy−99x+y2−2y−2304xy2=−2048xy3
2048xy3를 왼쪽으로 이동
25x2+874xy−99x+y2−2y−2304xy2+2048xy3=0
표준 양식으로 작성 ax2+bx+c=025x2+(874y−99−2304y2+2048y3)x+y2−2y=0
쿼드 공식으로 해결
x1,2=2⋅25−(874y−99−2304y2+2048y3)±(874y−99−2304y2+2048y3)2−4⋅25(y2−2y)
(874y−99−2304y2+2048y3)2−4⋅25(y2−2y)단순화하세요:4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801
x1,2=2⋅25−(874y−99−2304y2+2048y3)±4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801
솔루션 분리x1=2⋅25−(874y−99−2304y2+2048y3)+4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801,x2=2⋅25−(874y−99−2304y2+2048y3)−4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801
x=2⋅25−(874y−99−2304y2+2048y3)+4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801:50−874y+99+2304y2−2048y3+4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801
x=2⋅25−(874y−99−2304y2+2048y3)−4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801:50−874y+99+2304y2−2048y3−4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801
2차 방정식의 해는 다음과 같다:x=50−874y+99+2304y2−2048y3+4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801,x=50−874y+99+2304y2−2048y3−4194304y6−9437184y5+8888320y4−4432896y3+1219968y2−172852y+9801