exam Maths Puzzle Numerical Ability

How do i do my Number line.. Is there a chance to get your msn soo you can help me on msn?

Read Solution (Total 0)

exam Other Question

What is the value of b if 2x^2 + bx + 8 has a discriminant of -15 ?
i said 7 but my teacher marked it wrong !!! I think I should have said -7 or +7 ,can someone please expain this to me ? Please solve. Thanks!

1.)y=(x+3)^2

2.)y=(x-4)^2