Question

solve for x: x^2-2x-15=0 is ? please help

Answer 1

two numbers that multiply to get -15 and add to get -2

are ?

Answer 2

-5 and -3

Answer 3

-5*-2=15
-5+-2=-7

Answer 4

close...

Answer 5

one of them should be negative. which one?

Answer 6

-5 plus 2

Answer 7

(x-5)(x+3)

Answer 8

x=5 and x= -3

Answer 9

solve step by step

Answer 10

\(-5\) and \(3\)

then we expand the middle term \(x^2-2x-15=0\) becomes \(x^2-5x+3x-15=0 \iff x(x-5)+3(x-5)=0\iff (x+3)(x-5)=0 \\ \iff x=-3 \ \text{or } x=5\)

Answer 11

would you write it again