3 years ago

?????????????????????

Mathematics

1 answer:

Paul [167]3 years ago

6 0

Answer:

5x^2 + 7x

option C is your answer

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$b^{2}-15b-54=0. \newline
b^{2}-15b=54. \newline
b^{2}-15b+(\frac{15}{2})^{2}=54+(\frac{15}{2})^{2}. \newline
(b-\frac{15}{2})^{2}=\frac{441}{4}. \newline
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