Question
The Cadillac Bar in Houston, Texas, encourages patrons to write (tasteful) messages on the walls. One person wrote the quadratic formula, as shown here. Was this correct? If not, correct it.$$x=\frac{-b \sqrt{b^{2}-4 a c}}{2 a}$$
Step 1
The square root should be applied to the whole expression $b^{2}-4 a c$, not just the $b^{2}-4 a c$ part. Also, there should be a plus-minus sign in front of the square root. Show more…
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One patron wrote the quadratic formula, as shown here, on a wall at the Cadillac Bar in Houston, Texas. Was this correct? If not, correct it. $$ x=\frac{-b \sqrt{b^{2}-4 a c}}{2 a} $$
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