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What are the solutions to the quadratic equation 4x2 + 28x = 0?

x = 4 and x = −7
x = 4 and x = 7
x = 0 and x = −7
x = 0 and x = 7

User Dwightjl
by
6.5k points

2 Answers

2 votes

Answer:

x=0

x= -7

Explanation:

just took the test

User Velixo
by
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3 votes
4x^2 + 28x = 0

First step: take out the GCF

4x(x + 7) = 0

2nd step: equal each expression to 0

4x = 0
(x + 7) = 0

3rd: solve

4x= 0
x = 0
x + 7 = 0
x= -7

So the answer is x= 0 and x= -7
User SamHennessy
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7.3k points