What are the solutions to the equation 3 open paren x minus 4 close paren open paren x plus 5 close paren is equal to 0 ?
Answer
A
x is equal to 4 or x is equal to negative 5
B
x is equal to negative 4 or x is equal to 5
C
x is equal to 3 , x is equal to negative 4 , or x is equal to 5
D
x is equal to 3 , x is equal to 4 , or x is equal to negative 5
Explanation
The equation is 3(x − 4)(x + 5) = 0. Since 3 is not zero, the product equals zero when either x − 4 = 0 or x + 5 = 0. Thus x = 4 or x = −5, which is choice A.
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