Question

using the zero principle (9r+4)(5r-15)=0

Answer 1

just equate the 2 factors by 0.

Answer 2

making 9r + 4 = 0 and 5r - 15 = 0

Answer 3

Solve it on your own.

Answer 4

would it be -4,9 and 5,15 or is it a fraction.

Answer 5

the first equation would be a fraction but the 2nd would be an integer

Answer 6

so it would be -4/9, 15 I am lost I think.

Answer 7

you got the -4/9, @ the 2nd equation, try to transpose -15 to the other side and divide by 5 to get the answer.

Answer 8

so would this be the same principle t^2+8t+15=0

Answer 9

this is a different equation

Answer 10

yes. Factor the quadratic equation and then equate both with 0 then solve. :)