Question

Find the values of x that make the following quadratic equation equal 0: (x−1)(2x+5)=0


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Responses

x=−1
and x=25

x is equal to negative 1 and x is equal to 2 fifths

x=−5
and x=1

x is equal to negative 5 and x is equal to 1

x=−52
and x=1

x is equal to negative 5 halves and x is equal to 1

x=0
and x=1

x is equal to 0 and x is equal to 1

Answer 1

Set each factor equal to zero:

x − 1 = 0 ⇒ x = 1
2x + 5 = 0 ⇒ x = −5/2

So x = 1 and x = −5/2 (negative five halves).