X2 + 4x - 21 = 0 quadratic formula

Mathematics

1 answer:

Elena-2011 [213]3 years ago

6 0

Answer:

Step-by-step explanation:

x2 +4x-21=0. solve for x

$x = \frac{7}{2}$

$x = 3 \frac{1}{2} \ x = 3.5$

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