Question
8. Solve for x by factoring x2+3x−10=0
. Select all that apply.(4 points)
Responses
x=−5
x is equal to negative 5
x=−2
x is equal to negative 2
x=−1
x is equal to negative 1
x=1
x is equal to 1
x=2
x is equal to 2
x=5
. Select all that apply.(4 points)
Responses
x=−5
x is equal to negative 5
x=−2
x is equal to negative 2
x=−1
x is equal to negative 1
x=1
x is equal to 1
x=2
x is equal to 2
x=5
Answers
GPT-4o mini
To solve the equation \( x^2 + 3x - 10 = 0 \) by factoring, we need to find two numbers that multiply to -10 (the constant term) and add up to 3 (the coefficient of the \( x \) term).
The factors of -10 that add up to 3 are 5 and -2. So, we can write:
\[
(x + 5)(x - 2) = 0
\]
Next, we can set each factor equal to zero:
1. \( x + 5 = 0 \) → \( x = -5 \)
2. \( x - 2 = 0 \) → \( x = 2 \)
Thus, the solutions to the equation \( x^2 + 3x - 10 = 0 \) are:
- \( x = -5 \)
- \( x = 2 \)
Therefore, the correct responses are:
- \( x = -5 \)
- \( x = 2 \)
So the selections that apply are:
- x=−5
- x=2
The factors of -10 that add up to 3 are 5 and -2. So, we can write:
\[
(x + 5)(x - 2) = 0
\]
Next, we can set each factor equal to zero:
1. \( x + 5 = 0 \) → \( x = -5 \)
2. \( x - 2 = 0 \) → \( x = 2 \)
Thus, the solutions to the equation \( x^2 + 3x - 10 = 0 \) are:
- \( x = -5 \)
- \( x = 2 \)
Therefore, the correct responses are:
- \( x = -5 \)
- \( x = 2 \)
So the selections that apply are:
- x=−5
- x=2