Question

solve the following quadratic equation x2+2x-15=0

Answer 1

x^2 + 5x - 3x - 15 = 0
x(x+5) - 3(x+5) = 0
(x+5) (x-3) = 0
x = -5, 3

Answer 2

i s0lve this question same like that but teacher said its wrong ans :(

Answer 3

But this is the right answer.

Answer 4

hmmm thn why teacher said its wrong ans :/

Answer 5

The you need to ask the teacher for the solution. But this is right

Answer 6

can u help me in understand t0 matrix?

Answer 7

what help you need?

Answer 8

how we find inverse matrix?

Answer 9

reply meeeeeee????

Answer 10

Read this.. http://mathworld.wolfram.com/MatrixInverse.html
this article will give you a good insight about inverse matrix