Question

bai1.tim x biet:

a,(x+2).(x+3)-(x-2).(x+5)=0

b,(2x+3).(x-4)+(x-5).(x-2)=(3x-5).(x-4)

c,(8x-3).(3x+2)-(4x+7).(x+4)=(2x+1).(5x-1)=33

Answer 1

Đăng từng câu đio

Answer 2

Answer 3

,(8x-3).(3x+2)-(4x+7).(x+4)=(2x+1).(5x-1)-33 đúng không bạn

Answer 4

a) \(\left(x+2\right)\left(x+3\right)-\left(x-2\right)\left(x+5\right)=0\\ \Leftrightarrow x^2+5x+6-x^2-3x+10=0\\ \Leftrightarrow2x=-16\\ \Leftrightarrow x=-8\)