378-336
solve the following quadratic equasion
$-a^{2}$ +6a+7=0
-x*2+6x+7=0
-x^2+6x+7=0
4a-3b+5c,-5a+4b-c
6x+7=x^2
p left parenthesis x right parenthesis equals x squared plus 3 x minus 1 and q left parenthesis x right parenthesis equals 2 x.
2sinx-3cosx=1
e*e-e-30
on comparingthe linear equation 4x+(k-1)+7(x+3)
