-1=m/2+7
x(2x-5)=8
Jack and fill went up the hill then they dropped a pebble into an old well. After 4 seconds, the sound of the pebble splashing int...
-26= -2(7+x)
-26= -2(7=x)
$3x^{2}$-10x-4=0
$3x^{2}$+7x+2=0
2p^2 + 3pq + 21p + 31q
(-1,2),(19,5)
$2x^{2}$+9x+4=0
