exam Maths Puzzle Numerical Ability

Can someone help me solve this quadratic equation by completing the square? PLEASE!
2x^2+10x+11=0

This is what I have so far:
2x^2+10x/2=-11/2 which leads to;
x^2+5x=-11/2
T

Read Solution (Total 0)

exam Other Question
Tickets for the high school musical are $6.00 for adults and for $4.00 for students .how many adults bought tickets if 420 student tickets are sold and the total money collected is $3618 ? write the slope intercept form for an equation of the line parallel to the graph of the given equation and passing through the given point?

y=-2x+4, (6,-6)