3 years ago

ANSWER THIS ASAP NO FILE AT ATT!!

Mathematics

2 answers:

laila [671]3 years ago

7 0

Answer:

C is your answer

Step-by-step explanation:

almond37 [142]3 years ago

5 0

Answer:

The answer would be C

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$2x^2 + 9x =5$

we have to move 5 in the other side with a different sign, to get a 2 grade ecuation

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now we know

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$\displaystyle \boxed{ X_{1,2}=\frac{-b\pm\sqrt{\Delta} }{2a} }$

$\displaystyle X_1=\frac{-b-\sqrt{\Delta} }{2a} =\frac{-9-11}{2\cdot2}=\frac{-20}{4} =-5$

$\displaystyle X_2=\frac{-b+\sqrt{\Delta} }{2a} =\frac{-9+\sqrt{121} }{2\cdot4} =\frac{-9+11}{4} =\frac{2}{4} =\frac{1}{2}$

8 0

3 years ago

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