Question

Solve by factoring: One of the solutions to the quadratic equation x2 + 3x - 28 is -7. What is the other solution? can someone please help with this question ?

Answer 1

find two numbers whose product is -28 and sum is 3

Answer 2

thankyou!

Answer 3

they said -7 was a solution, which means (x + 7) is one of the factors. 7 times what equals -28?

Answer 4

7 x -4 =-28

Answer 5

so (x + 7)(x - 4)

x = -7
x = 4

Answer 6

ohhhhh, okay, i get..kinda. thankyou (:

Answer 7

no problem :]