Question

Which of the following equations has both 1 and -3 as solutions?
A. x^2-2x-3=0
B. x^2+2x-3=0
C. x^2-4x+3=0
D. x^2+4x+3=0

Answer 1

@TheSmartOne

Answer 2

You could try plugging it in to each answer choice.

Answer 3

First plug in 1
A is incorrect
B is a possible choice
C is a possible choice
D is incorrect

Answer 4

Now lets plug in -3
B. Is correct
C. is incorrect

Answer 5

can you show me how to plug the numbers in because when I tried all of the answer choices were wrong

Answer 6

@TheSmartOne

Answer 7

how do you plug in the numbers

Answer 8

You plug in the numbers in to the x spot.

Answer 9

like this 1^2-2(1)-3

Answer 10

Exactly. Then you get 1^2=1, 2(1)=1 so 1-2-3=-6
if it equals to zero then it is a solution of the equation.

Answer 11

when i plugged in -3 into the equation it came out to -18