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bogdanovich [222]
3 years ago
12

Solve 2x+4 so that it has one solution

Mathematics
2 answers:
natima [27]3 years ago
7 0

Answer:

-2

Step-by-step explanation:

We can set it equal to zero

2x+4 = 0

2x =-4

x = -2

zysi [14]3 years ago
3 0

Answer:

x = -2

Step-by-step explanation:

<em>To solve for variables, we need the equation to be set equal to something. If no other number is given, assume zero.</em>

2x + 4 = 0

<em>Move </em><em>4</em><em> to the right by subtracting it from the left and right (since it is being added).</em>

2x = -4

<em>Next, isolate </em><em>x</em><em> by dividing both sides by </em><em>2</em><em> (since </em><em>x</em><em> is being multiplied by </em><em>2</em><em>)</em>

x = -2

<em>We can check that this is correct by plugging in </em><em>-2</em><em> for </em><em>x</em><em> and seeing if we get </em><em>zero</em><em>.</em>

2(-2) + 4 = 0

-4 + 4 = 0

0 = 0

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