is x(x+7)=0 a quadratic equation
Answers
Answer:
multiplied by
(
x
−
7
)
=
0
So, this means, that if either term is equal to zero, the whole equation will equal to zero.
The first term is just
x
, so
x
=
0
is the first solution.
The second term is
(
x
−
7
)
. We need to set that equal to zero and solve for
x
.
x
−
7
=
0
x
=
7
which is our second solution.
To check, plugging back into
x
(
x
−
7
)
=
0
:
For
x
=
0
0
(
−
7
)
=
0
0
=
0
so it works.
For
x
=
7
7
(
7
−
7
)
=
7
(
0
)
=
0
0
=
0
which also works.
Step-by-step explanation:
The format of this queston is already in factored form. This makes it quite easy to solve for
x
. They key to this is to know that anything multiplied by
0
is
0
. We have two things multiplied by each other:
Answer:
Yes, x(x+7) is a quadratic Equation
Explanation:
(a)x(x+7)
=x^2+7x
x^2 is a quadratic Equation.
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